Dentist Abroad
Which of the following is NOT an indication for sealants?
1) Questionable or confirmed enamel caries
2) Presence of deep pits/fissure
3) Proximal caries
4) Increased risk for caries
Sealants are indicated for questionable or confirmed enamel caries, presence of deep pits/fissure, and increased risk for caries. Proximal caries are not an indication for sealants.
Patient received a heavy blow to the right body of the mandible sustaining a fracture there. You should suspect a second fracture is most likely to be present in:
1) Symphysis region
2) Left body of the mandible
3) Left sub-condylar region
4) Right sub-condylar region
ADC Test Answer: 3
Due to the mechanics of jaw fractures, a blow to one side may often result in a corresponding fracture on the contralateral sub-condylar region.
If a 4th root canal is present in a maxillary 1st molar, it will likely be located in which of the following roots?
1) Mesiolingual
2) Mesiobuccal
3) Distolingual
4) Distofacial
Well over 50% of maxillary 1st molars have two canals in the mesiobuccal root.
There are usually 3 roots and 4 canals in a maxillary 1st molar.
The fourth canal, the mesiolingual canal, is also referred to as: the accessory mesiobuccal canal, mesiocentric, mesiopalatal canal or MB2.
It is usually tough to find MB2 through clinical inspection and it is not obvious on a radiograph. A dentist should expect it is present before beginning a root canal on the first maxillary molar.
Ameloblastoma is the most aggressive:
1) Odontogenic tumor
2) Benign tumor
3) Malignant tumor
4) Fibrous tumor
Ameloblastoma is a benign but locally aggressive tumor of odontogenic origin, meaning it arises from the tissues that form teeth.
The most common cause of failure of the IDN (Inferior Dental Nerve) block is:
1) Injecting too low
2) Injecting too high
3) Injecting into the parotid gland
4) Incorrect anatomical landmarks
ADC Test Answer: 1
If the needle is injected too low, the anesthetic may not reach the nerve effectively, leading to failure of the block and insufficient anesthesia during dental procedures.
Beta-blockers reduce blood pressure primarily by:
1) Blocking angiotensin II receptors
2) Reducing heart rate and cardiac output
3) Increasing diuresis
4) Vasodilation
Beta-blockers lower blood pressure by decreasing heart rate and the force of contraction, which reduces cardiac output.
What is the most abundant extracellular cation?
1) Calcium
2) Sodium
3) Potassium
4) Magnesium
Sodium is the main extracellular cation, playing a crucial role in maintaining fluid balance and nerve function.
Maximum decrease in cardiac output is caused by:
1) Enflurane
2) Halothane
3) Sevoflurane
4) Methoxyflurane
Enflurane causes the maximum decrease in cardiac output, followed by halothane.
The main stimulation for production of A.D.H. is 1. Increase in plasma potassium. 2. Decrease in blood volume 3. Increase in extracellular fluid 4. Decrease inextracellularosmotic pressure
Physiology Answer: 2The main stimulation for production of A.D.H. is Decrease in blood volume - A.D.H. secretion increases during osmotic diuresis
Which medication is an angiotensin II receptor blocker (ARB)?
1) Verapamil
2) Spironolactone
3) Candesartan
4) Atenolol
Candesartan is an ARB, which lowers blood pressure by blocking angiotensin II receptors.
A wound to the posterior left axillary line, between the ninth and tenth rib, and extending approximately 5 cm deep, will most likely damage which organ?
1) Ascending colon
2) Duodenum
3) Left kidney
4) Spleen
The spleen follows the long axes of ribs 9 to 11 and lies mostly posterior to the stomach, above the colon, and partly anterior to the kidney.
Most of the duodenum (choice 2) is positioned too far to the right to be affected by this injury.
Even the third part of the duodenum, which runs from right to left, would still be out of harm's way. In addition, the duodenum lies at about levels L1 to L3, placing it too low to be injured in this case.
The superior pole of the left kidney (choice 3) is bordered by the lower part of the spleen. However, it is crossed by rib 12 and usually does not extend above rib 11. It would probably be too low and medial to be injured in this case because this penetration is at the posterior axillary line.
The diagnosis for a tooth (75) with deep decay extending to the pulp is likely:
1) Periapical abscess
2) Dentigerous cyst
3) Granuloma
4) Radicular cyst
ADC Test Answer: 2
Deep decay can result in the formation of a dentigerous cyst, especially if associated with an unerupted tooth, reflected in imaging as a radiolucency surrounding the root.
What is the most effective non-pharmacological method for managing dental anxiety?
1) Tell-Show-Do technique
2) Breathing exercises
3) Positive reinforcement
4) Nitrous oxide sedation
Breathing exercises, such as deep breathing or diaphragmatic breathing, are widely recognized as effective non-pharmacological methods for reducing anxiety. They help the patient to relax and can be performed easily without additional equipment.
For lower premolars, the purpose of inclining the handpiece lingually is to:
1) Avoid buccal pulp horn
2) Avoid lingual pulp horn
3) Remove unsupported enamel
4) Conserve lingual dentine
ADC Test Answer: 1
Inclining the handpiece lingually helps in avoiding the buccal pulp horn while preparing the cavity.
What is the most common histological finding in pemphigus vulgaris?
1) Acanthosis
2) Acantholysis
3) Hyperkeratosis
4) Basal cell carcinoma
Acantholysis is the primary histological feature of pemphigus vulgaris, leading to the formation of intraepithelial vesicles.
Which fracture is most likely to lead to meningitis?
1) Le Fort 1
2) Le Fort 2
3) Le Fort 3
4) Zygomatic
Le Fort 3 fractures involve the craniofacial skeleton extensively and can disrupt the dura mater, increasing the risk of infection and potentially leading to meningitis.
Rapid induction of anaesthesia occurs with which of the following anaesthetic:
1) Isoflurane
2) Halothane
3) esflurane
4) Sevoflurane
Desflurane has the lowest blood gas partition coefficient of 0.42, so has fastest induction and recovery.
Apart from a dentigerous cyst, which other lesions are associated with the absence of teeth?
1) Adenomatous odontogenic tumor
2) Keratocyst
3) Ameloblastoma
4) Calcifying odontogenic tumor
5) All of the above
All these lesions can be associated with the absence of teeth, either due to their developmental nature or their impact on the surrounding structures.
Which is the most common jaw cyst in the UK?
1) Dentigerous cyst
2) Radicular cyst
3) Odontogenic keratocyst
4) Nasopalatine duct cyst
The radicular cyst is the most prevalent type of jaw cyst, commonly associated with non-vital teeth.
Not a physical property of propofol:
- Water based preparation
- Colour of the solution is white
- It contains egg lecithin
- Used as 2% strength
Propofol is oil based preparation containing soybean oil, egg lecithin and glycerol.
In what area of the root are periodontal ligament fibers thinner?
1) Apical third
2) Middle third
3) Cervical third
4) Entire root
Periodontal ligament fibers are generally thinner in the middle third of the root compared to the apical and cervical thirds, where they are typically thicker for better support.
For which of the following is a written consent form NOT typically required?
1) Routine dental fillings
2) Dental radiographs
3) Surgical extraction of a tooth
4) Dental photography for educational purposes
Although the use of radiographs involves some risk, they are
considered part of the diagnostic process and do not typically require written
consent unless the patient specifically refuses them.
Orthopedic correction of a mild skeletal Angle Class III malocclusion should be started:
1) Shortly after eruption of the upper first permanent molars.
2) Immediately following the pre-pubertal growth spurt.
3) Just prior to the pre-pubertal growth spurt.
4) Shortly after eruption of the upper second permanent molars.
Orthodontics Answer: 3
Explanation: Early intervention during growth spurts
capitalizes on the skeletal adaptability, making corrections more effective.
In which condition is the prothrombin time typically prolonged?
1) Hemophilia
2) Vitamin K deficiency
3) Use of salicylates or anticoagulants
4) Platelet disorders
Both salicylates and anticoagulants can interfere with blood clotting mechanisms and prolong prothrombin time.
Hydralazine is an antihypertensive medication that functions as a:
1) Vasodilator
2) ACE inhibitor
3) Beta-blocker
4) Calcium channel blocker
Hydralazine is a direct vasodilator that helps reduce blood pressure by relaxing vascular smooth muscle.
Which of the following is NOT a consideration when providing care to a patient with a hearing impairment?
1) Communication preferences (e.g., sign language, lip reading)
2) The use of visual cues
3) The patient's ability to understand dental terminology
4) The patient's favorite brand of toothpaste
While the patient's preference for toothpaste can be important for their oral hygiene compliance, it is not a critical consideration in the communication and care provision for a patient with a hearing impairment.
A patient who recently had a calculus removed from the kidney presented with a radiolucent area in the left maxilla with clinical evidence of swelling. The disease that you would immediately suggest is:
1) Diabetes
2) Thyrotoxicosis
3) Hyperparathyroidism
4) Osteoporosis
ADC Test Answer: 3
Hyperparathyroidism can lead to radiolucent lesions in the jaw due to increased osteoclastic activity and calcium mobilization from bones.
Which of the following is NOT a component of informed consent in dentistry?
1) Explanation of the diagnosis
2) Description of the proposed treatment
3) Discussion of the risks and benefits of the treatment
4) Patient's agreement to pay for the treatment
While financial considerations are important in the overall decision-making process, informed consent specifically pertains to the patient's understanding and agreement to the medical aspects of the treatment, not the financial agreement.
What antibiotic is commonly prescribed for chronic sinusitis?
1) Amoxicillin
2) Doxycycline
3) Azithromycin
4) Ciprofloxacin
Doxycycline is often used to treat chronic sinusitis due to its effectiveness against a range of bacteria that can cause sinus infections.
Bone assessment of abutment teeth:
1) Horizontal bone loss is more important.
2) Vertical bone loss is more important.
3) Equally important.
4) Not important.
ADC Test Answer: 3
Both horizontal and vertical bone loss are important factors in assessing the health of abutment teeth, as they can influence the stability and longevity of prosthetic restorations.
Consent is needed from a patient to share information. Which of the following needs explicit consent?
1) To share information with an insurance company
2) To share information with other doctors in the practice
3) To share information with the therapist treating the patient
4) To share information with the patient's GP
Sharing information with an insurance company typically requires explicit consent due to privacy concerns and regulations.
Which of the following is a common oral manifestation of diabetes
mellitus?
1) Oral lichen planus
4) Gingival overgrowth
3) Geographic tongue
4) Oral candidiasis
Diabetes can lead to a compromised immune system and increased
susceptibility to infections, making oral candidiasis a common manifestation.
What is the most common type of sedation used in dentistry for anxious patients?
1) Intravenous sedation
2) Oral sedation
3) Nitrous oxide
4) Intramuscular sedation
Nitrous oxide is widely used in dentistry due to its safety profile, ease of administration, and quick onset and recovery.
What type of epithelium lines the maxillary sinus?
1) Ciliated columnar
2) Stratified squamous
3) Simple cuboidal
4) Transitional
The maxillary sinus is lined with ciliated columnar epithelium, which is a type of respiratory mucosa
If a patient on warfarin is also allergic to penicillin, which antibiotic is recommended?
1) Erythromycin
2) Clindamycin
3) Cephalexin
4) Vancomycin
Clindamycin is a suitable alternative for patients allergic to penicillin who are also on warfarin since it does not interact adversely with anticoagulants.
If the sealant or bonding agent is not placed on part of the enamel that has been etched by an acid solution, you would expect:
1) Arrest of enamel caries by organic sulfides
2) The enamel to return to normal within 7 days
3) Continued enamel demineralization in the etched area
4) Slight attrition of the opposing tooth
If the etched area is not sealed, it may remineralize over time, but the risk of continued demineralization exists if not properly managed.
Methemoglobinemia caused by?
1) Procaine
2) Prilocaine
3) Etidocaine
4) Ropivacaine
Methemoglobinemia is mainly caused by prilocaine but can also be caused by benzocaine and rarely reported with lignocaine.
Penicillins:
1) Are the antibiotic of choice for anaerobic infections
2) Are bacteriostatic
3) Are protagonistic to tetracycline
4) Interfere with bacterial cell wall synthesis
The penicillins all act by interfering with bacterial cell wall synthesis, by inhibiting cross-linking of the mucopeptides in the cell wall and as such are bacteriocidal.
What is the purpose of regular audits of dental records?
- To assess and improve the quality of patient care
- To ensure compliance with data protection laws
- To determine staff performance levels
- To identify the most popular treatment options
Regular audits of dental records help dental practices to evaluate the quality of their care, identify areas for improvement, and ensure that records meet legal and professional standards.
Which antibiotic is contraindicated in lactating mothers?
1) Amoxicillin
2) Tetracyclines
3) Penicillin
4) Clindamycin
Tetracyclines are contraindicated in lactating mothers due to the risk of affecting the infant's teeth and bone development.
What type of consent is required for a simple buccal pit restoration?
1) Implied consent
2) Verbal consent
3) Written consent
4) Informed refusal
Implied consent is sufficient for routine and non-invasive
procedures, such as a simple buccal pit restoration, as it is assumed the
patient agrees to the treatment based on their cooperation during the process.
What is the role of dental records in the event of a malpractice allegation?
- To prove the dentist's innocence
- To determine if the dentist followed the standard of care
- To provide financial compensation to the patient
- To assess the patient's satisfaction with the treatment
Dental records are used to evaluate whether the care provided to the patient met the standard of care expected within the community.
What is the predominant microorganism in deep dentinal caries?
1) Streptococcus mutans.
2) Lactobacillus species.
ADC Test Answer: 2
Lactobacilli are typically the predominant bacteria found in deep dentinal caries due to their ability to produce high levels of acid in the absence of oxygen.
Possible thin dentin with normal enamel thickness and cervical fractures are
symptoms of which option?
1) Dentin dysplasia
2) Hypercementosis
3) Dentinogenesis imperfecta
4) Hypo plastic Amelogenesis
Possible thin dentin with normal enamel thickness and cervical fractures are symptoms of Dentinogenesis imperfect1) This condition is characterized by the abnormal development of dentin, which is the hard tissue that forms the majority of the tooth. In Dentinogenesis imperfecta, the dentin is not properly formed, leading to weak and brittle teeth that are prone to fractures. The enamel, on the other hand, is typically normal in thickness.
Instrument which has a 4 digit formulae;
1) angle former
2) hoe
3) hatchet
4) spoon excavator
Since the cutting edge of the angle former is not at a right angle to the blade axis[its usually 80-85deg for angle former
Maximum shrinkage after gingival curettage expected from tissue that is:
1) Fibroedematous
2) Edematous
3) Fibrotic
4) Formed within an infrabony pocket
Edematous tissue contains excess fluid, which can lead to greater shrinkage after curettage compared to fibrotic tissue, which is denser and less likely to shrink significantly.
A 9 year old presents for treatment immediately following a facial injury
resulting in a fracture of a maxillary central incisor that involves the enamel
only. The tooth tests negative to an electric pulp tester. This finding
indicates that the tooth
1) is nonvital and should be extracted
2) is nonvital and endodontic therapy is indicated
3) has a root fracture and should be extracted
4) should be observed and tested again at a later date.
A negative response to pulp testing immediately after trauma may not indicate necrosis but temporary pulp shock. Observation allows the pulp to recover.
What is the purpose of documenting informed consent in the dental record?
- To ensure the patient has read and understood the treatment plan
- To provide legal protection in the event of a malpractice claim
- To serve as a reminder for the dental team of the agreed-upon treatment
- To bill the patient for services provided
Documenting informed consent protects the dentist in legal matters by showing that the patient was fully informed and agreed to the proposed treatment.
For a pigmented fissure, what is the best way to diagnose caries?
1) Visual examination
2) Radiographic examination
3) Investigate the area with a round bur
4) Transillumination
Investigating the area with a round bur allows for direct assessment of the fissure and any underlying carious lesions.
The ingredient of dental waxes that is extremely hard, has a high melting temperature, is added to decrease flow at oral temperatures and contributes to glossiness of the waxes is 1. paraffin 2. gum dammar 3. gutta percha 4. carnauba
Dental Material Answer: 4Carnauba is added to decrease flow at oral temperatures and contributes to glossiness, is extremely hard, has a high melting temperature
Why do patients with heart failure bleed easily, and how should such bleeding be managed?
1) They have lower blood pressure
2) They are usually on blood thinners
3) They have a higher platelet count
4) They undergo frequent surgeries
Patients with heart failure often take anticoagulants like aspirin or warfarin to prevent thromboembolic events.
What is the significance of the danger zone in dental surgery?
1) It indicates areas of high infection risk
2) It is a region where anesthesia is ineffective
3) It is a site for surgical incisions
4) It is a location for dental implants
The danger zone refers to areas of the face where infections can spread to critical structures, such as the cavernous sinus, posing serious health risks.
What is the significance of the critical pH in dental caries progression?
1) It is the pH at which bacteria can survive in the oral cavity.
2) It is the pH at which hydroxyapatite begins to dissolve.
3) It is the pH at which saliva stops protecting the tooth.
4) It is the pH at which fluoride becomes ineffective.
The critical pH is the point at which hydroxyapatite dissolves, marking the onset of demineralization and the potential for caries development.
Which muscle of the soft palate is not supplied by the pharyngeal plexus? 1. Palatoglossus 2. Musculus uvulae 3. Palatopharyngeus 4. Tensor veli palatine
Anatomy Answer: 4muscle of the soft palate is not supplied by the pharyngeal plexus is Tensor veli palatine
A child has received a successful inferior alveolar nerve block using 1.5ml of
2% lidocaine with 1:100,000 epinephrine. However, during placement of a rubber
dam clamp on the first permanent molar, the child complains that the “tooth
ring” is hurting. Which of the following is the most appropriate management?
1) Wait 15 minutes until more profound anesthesia is achieved
2) Anesthetize the lingual nerve with the remaining lidocaine.
3) Anesthetize the long buccal nerve with the remaining lidocaine.
4) Proceed with treatment without rubber dam.
The long buccal nerve supplies the gingiva in the region and may require additional anesthesia
What is the purpose of a consent form?
1) To serve as legal evidence of informed consent
2) To inform the patient of the risks and benefits of treatment
3) To protect the dentist from legal liability
4) To replace verbal communication between the dentist and patient
While consent forms do provide a written record of the consent
discussion, their primary purpose is to serve as evidence that the patient has
been informed and has voluntarily agreed to the proposed treatment. Verbal
communication remains essential for the informed consent process.
The principal role of Vitamin E in the prevention of oxidative damage is to potentiate the action of superoxide dismutase
Morphine withdrawal is characterized by all except
1) Miosis
2) Yawning
3) Lacrimation
4) Diarrhea
Withdrawal of morphine is associated with marked drug-seeking behavior.
Physical manifestations of abstinence are - lacrimation, sweating, yawning, anxiety, fear, restlessness, gooseflesh, mydriasis, tremor, insomnia, abdominal colic, diarrhea, dehydration, rise in BP, palpitation and rapid weight loss.
Delirium and convulsions are not a characteristic feature (contrast barbiturates) and are seen only occasionally.
Cardi-ovascular collapse and fatality are rare if supportive measures are instituted.
The deciduous teeth which provide the adequate space is an important factor in relation of
1) Normal occlusion
2) Malocclusion
3) High caries index
4) Early exfoliation of deciduous teeth
Compared to the permanent dentition the mesio distal diameter of the primary dentition is larger .
Which of the following statements about muscle fibers is correct?
1) The A band is made of Myosin
2) Troponin combines with calcium
3) Troponin has I, T, and C subcomponents
4) All of the above
All the statements are correct.
What is the typical presentation of trigeminal neuralgia?
1) Constant dull pain
2) Intermittent sharp pain triggered by stimuli
3) Pain that worsens at night
4) Pain associated with swelling
Trigeminal neuralgia is characterized by sudden, severe, and sharp facial pain that can be triggered by light touch or other stimuli.
What enzyme does Streptococcus mutans produce that plays a key role in
converting dietary sugars into extracellular polysaccharides, which contribute
to bacterial adherence and biofilm formation?
1) Amylase
2) Glucosyltransferase (GTF)
3) Fructosyltransferase
4) Sucrase
S. mutans produces glucosyltransferase, which converts dietary sugars, particularly sucrose, into extracellular polysaccharides like glucans and fructans that facilitate bacterial adherence to tooth structures and promote biofilm formation.
A patient on diuretics may experience which oral side effect? 1) Xerostomia (dry mouth) 2) Gingival hyperplasia 3) Stomatitis 4) Facial swelling
Pathology and Medicine Answer: 1Diuretics can lead to xerostomia, commonly observed in patients on long-term antihypertensive therapy.
The inverse Square Law is concerned with the intensity of radiation; using type D film of 200mm target to film distance, the exposure time was 0.25s. What would be the exposure for the same situation with 400mm target to film distance?
1) 0.5s
2) 1.0s
3) 2.0s
4) 0.25s
ADC Test Answer: 2
According to the inverse square law, doubling the distance from the radiation source results in a fourfold decrease in intensity, thus requiring four times the exposure time ($I propto frac{1}{d^2}$).
What is the function of glucosyltransferase (GTF) produced by Streptococcus
mutans?
1) Converts glucose to lactic acid
2) Assists in the removal of bacteria from the tooth surface
3) Helps in the formation of dentin
4) Converts sucrose to glucans and fructans
GTF is an enzyme that helps Streptococcus mutans adhere to the tooth surface by converting dietary sugars into sticky substances that form plaque.
Which immunoglobulin types are produced in the Peyer patches of the intestine?
1) IgG and IgE
2) IgA and IgM
3) IgM only
4) IgD only
Within the Peyer patches, B lymphocytes stimulate the production of IgA and IgM, which are crucial for mucosal immunity.
Can informed consent be given over the phone or through email?
1) Yes, as long as the patient signs and returns the form
2) No, it must always be obtained in person
3) It is preferred in person, but alternatives can be used in some cases
4) Only for emergency treatments
Informed consent is typically a face-to-face interaction where the
dentist can assess the patient's understanding and answer questions. However,
some jurisdictions may allow for alternative methods under certain
circumstances, such as telemedicine or in emergencies.
What is the role of SmartConsent technology in informed consent?
1) To
replace the need for consent
2) To standardize and communicate information effectively to patients
3) To eliminate the need for written consent
4) To provide legal protection for healthcare providers
SmartConsent aims to improve how information about risks and benefits is communicated to patients.
What’s the percentage of individuals over 25 years old with periodontitis in the UK?
1) 30%
2) 50%
3) 64%
4) 75%
Approximately 64% of individuals over 25 years old in the UK are affected by periodontitis, highlighting the prevalence of periodontal disease.
The biochemical defect in Osteogenesis Imperfecta, type II is: 1. a mutation in the alpha 1 chain of Type I collagen. 2. a deficiency in collagenase. 3. a deficiency in lysyl oxidase. 4. a deficiency in lysyl hydroxylase.
Biochemistry Answer: 4The biochemical defect in Osteogenesis Imperfecta, type II is a deficiency in lysyl hydroxylase.
Drug class causing free water clearance:
a) Diuretic
b) Saluretic
c) Uricosuric
d) Aquaretic
Vasopressin antagonists like tolvaptan are aquaretics
Which of the following is a Beta-1 selective blocker ?
1) propranolol
2) nadolol
3) pindolol
4) betaxolol
Beta-1 selective blockers
These include atenolol and metoprolol (as well as betaxolol, bevantolol, and perhaps esmolol).
Non-selective beta blockers
propranolol
What is the most common site for oral cancer?
1) Hard palate
2) Lateral borders of the tongue
3) Lower lip
4) Buccal mucosa
The lower lip is the most frequently affected site for oral cancer, while the lateral borders of the tongue are also common sites within the oral cavity.
Flaccid lip, digit sucking, high frenum attachment & poor muscle tone are the etiology of :
1) Anterior cross bite
2) Diastema
3) Anterior bite
4) Posterior cross bite
Midline diastema Etiology Normal developing dentition - (Ugly Ducking Stage) Parafunctional habits Retrognathic mandible/ Prognathic mandible Frenum attachments
- Flaccid lips along with poor muscle tone
- Simple Tongue thrust can cause anterior open bite as well as diastema
- Thumb sucking or digit sucking for a prolonged time period
Mesio-distal angulation of teeth
Tooth anomalies (eg.
Pathological (Juvenile periodontitis)
What is the best treatment for recurrent pericoronitis?
1) Antibiotics
2) Extraction of the involved tooth
3) Root canal treatment of the third molar
4) Periodontal scaling and root planing
Extracting the impacted third molar is the best treatment for recurrent pericoronitis as it addresses the underlying cause of the infection.
Which of the following methods of instrument sterilization uses the lowest
temperature?
1) Steam autoclave.
2) Dry heat oven.
3) Ethylene oxide method
4) Glass bead sterilizer.
The ethylene oxide method of sterilization operates at lower temperatures compared to steam autoclaves and dry heat ovens. It is particularly useful for heat-sensitive instruments, as it can effectively sterilize at temperatures around 30-60°C, making it suitable for materials that cannot withstand higher temperatures.
Cardiac or central nervous system toxicity may result when standard lidocaine doses are administrated to patient with circulatory failure. This may be due to the following reason:
1) Lidocaine concentration are initially higher in relatively well perfused tissues such as brain and heart
2) Histamine receptors in brain and heart get suddenly activated in circulatory failure
3) There is sudden outburst of release of adrenaline, noradrenaline and dopamine in brain and heart
4) Lidocaine is converted into toxic metabolite due to longer stay in liver
Lignocaine (as with other lipid soluble anaesthetic agents) initially reaches to well perfused areas like brain and heart so in circulatory failure blood from non vital structures is diverted to vital structures like brain and heart and patient can develop toxic levels.
The complications of using an aerotor at 30,000 rpm for impacted molar
extraction are:
1) Necrosis of bone
2) Tissue laceration
3) Tissue necrosis
4) Emphysema
The use of an aerotor at high speeds can lead to the development of
emphysema, which is a serious complication that occurs when air is forced into
the soft tissues. This can happen during the removal of bone or drying of the
root canal with an air syringe. The risk of emphysema is a significant concern,
making the use of aerotors contraindicated in certain situations, particularly
in the extraction of impacted molars.
Spironolactone, an antihypertensive agent, belongs to which class of drugs?
1) Potassium-sparing diuretics
2) ACE inhibitors
3) Calcium channel blockers
4) Beta-blockers
Spironolactone is a potassium-sparing diuretic that blocks aldosterone, helping to reduce blood pressure without causing potassium loss.
A successful stellate ganglion block can produce:
1) Hypotension
2) Horner syndrome
3) Brachial plexus involvement
4) All of the above
Local Anesthesia Answer: 4
All of the above Successful stellate ganglion will produce Horner syndrome (ptosis, miosis.
What factor can enhance the bicarbonate-mediated acid-neutralizing effect of saliva?
1) High-fat diet
2) Decreased salivary flow
3) Increased salivary flow
4) Sleep
Increased salivary flow naturally raises bicarbonate levels in the saliva, which helps to neutralize acids in plaque more effectively, protecting against enamel demineralization and promoting oral health.
If maxillary canines are placed forward to orbital plane, they are said to be in
1) Protraction
2) Retraction
3) Abstraction
4) Contraction
Orthodontics Answer: 1
SOLUTION According to Simon, in normal arch relationship, the orbital plane passes through the distal axial aspect of the maxillary canine Malocclusions described as anteropostenor deviations based on their distance from the orbital plane are as follows: 1.
Simon used the orbital plane (a plane perpendicular to the F-H plane at the margin of the bony orbit directly under the pupil of the eye).
2. Retraction: The teeth, one or both dental arches and/or jaws are too far backward, i.e. placed posterior to the plane than normal
The ethical principle of justice in dentistry relates to:
1) Fair treatment of patients
2) Distribution of dental resources
3) Compliance with legal regulations
4) Both A and B
Explanation: The principle of justice in dentistry involves both fair treatment
of patients, ensuring equitable care and respect for individual rights, and the
distribution of dental resources in a way that is fair and equitable among all
patients.
At the end of a balanced anaesthesia technique with non-depolarizing muscle relaxant, a patient recovered spontaneously from the effect of muscle relaxant without any reversal. Which of the below given is the most probable relaxant the patient received?
- Pancuronium
- Gallamine
- Atracurium
- Vecuronium
The patient must have received Atracurium which is a short-acting muscle relaxant.
In the context of jurisprudence, what is "malpractice"?
1) A legal term for any dental procedure
2) A form of patient consent
3) Professional negligence that results in harm to a patient
4) The act of providing free dental care
Ethics and Jurisprudence Answer: 3Malpractice refers to a situation where a dental professional fails to provide the standard of care expected in the profession, leading to injury or harm to the patient. It is a legal concept that can result in lawsuits and disciplinary action.
The most potent narcotic analgesic is
1) Morphine
2) Pethidine
3) Methadone
4) Pentazocine
Methadone is a synthetic narcotic analgesic The other major synthetic narcotic is meperidine (Demerol).
Hypochromic anemia is associated with
1) iron deficiency.
2) aminopyrine therapy.
3) vitamin B12 deficiency.
4) folic acid deficiency.
Iron deficiency anemia is characterized by small (microcytic), pale
(hypochromic) red blood cells due to inadequate hemoglobin synthesis.
Common causes include poor dietary intake, chronic blood loss, or malabsorption.
Which of the following antibiotics shows an incidence of approximately 8% cross-allergencity with penicillins?
1) Bacitracin
2) Erythromycin
3) Cephalexin
4) Vancomycin
Cephalosporins can cause allergic reactions in people with penicillin allergy.
it is generally recommended that those allergic to penicillin avoid cephalosporins all together.
Drug of choice for ventricular arrhythmias induced by bupivacaine:
1) Bretylium tosylate
2) Lignocaine
3) Nifedipine
4) Verapamil
Bupivacaine has got high cardiotoxic potential.
What is the penultimate tooth to erupt in permanent dentition?
1) Mandibular first molar
2) Second molar
3) Canine
4) Incisor
The second molars are typically one of the last teeth to erupt in the permanent dentition, following the eruption of all others.
Orthodontic tooth movement is inhibited by which of the following drugs
1) NSAIDS, such as Brufen
2) OPIOIDS, such as CORTISONE
3) Antibiotics such as tetracycline
4) Vasoconstrictors such as adrenaline
SOLUTION NSAIDS, i.e.
• Nimesulide does not interfere with PG production and so can be safely given during tooth movements.
All of the following statements are true regarding the cephalosporin antibiotics except 1. they are bactericidal 2. they are ineffective against gram negative microorganisms 3. they are potentially cross allergenic with penicillin 4. they are resistant to penicillinase
Pharmacology Answer: 2cephalosporin are bactericidal, are potentially cross allergenic with penicillin, resistant to penicillinase
Which of the following is NOT a benefit of computerized patient records?
1) Reduced frequency of errors
2) Increased costs
3) Improved patient safety
4) Enhanced data protection
While there may be initial costs associated with implementing EDR systems, the long-term benefits include reduced errors and improved safety.
Which nerve is affected if a patient is unable to gaze laterally to the left?
1) Right abducent
2) Right trochlear
3) Left abducent
4) Left trochlear
The left abducent nerve (cranial nerve VI) innervates the lateral rectus muscle, which is responsible for lateral eye movement.
The gas with greatest solubility in blood:
- Nitrous oxide
- Nitrogen
- Oxygen
- Hydrogen
Although the solubility of nitrous oxide in blood is less than other inhalational agents, its solubility is 35 times more than nitrogen and 15 times more than oxygen.
What is the primary legal concern regarding dental records?
- Data protection
- Patient confidentiality
- Consent management
- All of the above
Dental records are subject to legal regulations concerning data protection, patient confidentiality, and consent management.
While combining NaOCH and H2O2 as irrigants
1) H2O2 should be used last
2) NaOCH should be used last
3) First irrigation should be done by normal saline
4) NaOCH and H2O2 should never be used simultaneously
Because residual H2O2 might react with debris and produce gas that can cause continuous pain.
What is the significance of the pH buffering capacity of saliva in
preventing dental caries?
1) It does not affect caries formation
2) It prevents the formation of lactic acid
3) It helps to maintain a pH above the critical threshold for demineralization
4) It promotes the formation of enamel
Saliva's buffering capacity helps to counteract the acidity produced by bacterial fermentation of sugars, maintaining a pH above the critical threshold and preventing demineralization.
A permanent tooth erupting in the mouth of an 11 years old child is most likely 1. maxillary lateral incisor 2. mandibular second bicuspid 3. maxillary third molar 4. rnandibular central incisor
Dental Anatomy Answer: 2A permanent tooth erupting in the mouth of an 11 years old child is most likely mandibular second bicuspid
Diabetic insipidus is due to the lack of 1 Insulin 2 Angiotensin. 3 Aldosterone. 4 A.D.H.
Physiology Answer: 4Diabetic insipidus is due to the lack of ADH
Which of the following statements is not true regarding sulfonamides:
1) Sulfasalazine is absorbed well from GIT
2) Crystalluria can occur with sulfonamide administration
3) Sulfonamide administration to Newborn may cause Kernicterus
4) Sulfonamides are of value in treatment of infections due to Norcardia species
Sulfasalazine is absorbed well from GIT Sulfasalazine is poorly absorbed (10-20%) from the GIT .
The drug currently in wide use for treating opioid dependent individuals 1. methadone 2. pentazocine 3. alphaprodine 4. meperidine
Pharmacology Answer: 1The drug currently in wide use for treating opioid dependent individuals is metahdone
What is the retention period for dental records according to most dental boards?
1) 2 years
2) 5 years
3) 10 years
4) Varies by country/state
The retention period for dental records is typically dictated by each country's or state's dental board.
What is the purpose of a comprehensive medical history in dental care?
- To bill the patient's insurance
- To tailor treatment plans based on the patient's health
- To determine the patient's credit score
- To market dental services to the patient
Knowing the patient's medical history helps the dentist make informed decisions about the patient's treatment and overall care.
What are the cells in cementum that line its boundary with the periodontal ligament (PDL) with cytoplasmic processes directed towards cementum?
1) Cementoblasts
2) Osteoblasts
3) Fibroblasts
4) Odontoblasts
Cementoblasts are responsible for forming cementum and have processes that extend towards the PDL.
A dentist who performs unnecessary procedures for financial gain is violating which ethical principle?
1) Autonomy
2) Non-maleficence
3) Beneficence
4) Justice
Ethics and Jurisprudence Answer: 3Beneficence involves acting in the best interest of the patient. Performing unnecessary procedures for financial gain is contrary to this principle and constitutes unethical behavior.
What neurotransmitter is responsible for closing pre-capillary sphincters?
1) Acetylcholine
2) Serotonin
3) Nor-adrenaline
4) Substance P
Nor-adrenaline is responsible for vasoconstriction and can close pre-capillary sphincters, regulating blood flow.
When a dentist suspects elder abuse, what is the first step they should take?
1) Confront the caregiver about the suspicion
2) Report the suspicion to the patient's family
3) Report the suspicion to the local Adult Protective Services (APS) agency
4) Treat the patient's dental issues without further action
The first step in suspected elder abuse is to report the concern to Adult Protective Services.
Kiwi is known to potentially cause which types of hypersensitivity reactions?
1) Type II
2) Type III
3) Type I
4) Type IV
Kiwi can trigger type I hypersensitivity reactions, such as anaphylaxis and urticaria, due to IgE-mediated responses to specific proteins in the fruit.
Which cells are found in hepatic stomatitis?
1) Lymphocytes
2) Monocytes
3) Neutrophils
4) Macrophages
Neutrophils are typically present in hepatic stomatitis, indicating an acute inflammatory response, while multinucleate giant cells may also be observed in conditions like herpes labialis.
Of the following, the most difficult impaction to extract is:
1) Mesioangular
2) Vertical
3) Distoangular
4) Horizontal
Distoangular impactions of mandibular molars are often considered the most challenging to extract due to their position and the amount of bone that must be removed to access the tooth. The angulation of the tooth can complicate the extraction process, requiring more extensive surgical intervention. Additionally, the removal of bone in this area can weaken the ramus of the mandible, increasing the risk of fracture during extraction.
The steps of plaque formation on teeth are:
1) Pellicle, biofilm, materia alba, plaque
2) Biofilm, pellicle, plaque, materia alba
3) Pellicle, plaque, biofilm, materia alba
4) Materia alba, plaque, biofilm, pellicle
The formation of dental plaque begins with the deposition of a pellicle, a thin film of proteins and salivary components on the tooth surface. This pellicle provides a substrate for bacterial adhesion, leading to the development of a biofilm. As the biofilm matures, it can form a white, soft, and easily removable substance known as materia alba. If not removed, the biofilm can become mineralized and transform into the dense and firm structure recognized as dental plaque, which can contribute to the onset of gum disease and tooth decay.
In an average child the mixed dentition period is from 1. 10 years to 25 years 2. 4 yrs to 12 yrs 3. 8 yrs to 17 yrs 4. 6 yrs to 13 years
Dental Anatomy Answer: 4In an average child the mixed dentition period is from 6 yrs to 13 y
Loss of sensation in the lower lip may be produced by:
1) Bell’s palsy
2) Traumatic bone cyst
3) Trigeminal neuralgia
4) Fracture in the mandible first molar region
ADC Test Answer: 4
A fracture in this region can damage the inferior alveolar nerve, leading to loss of sensation in the lower lip and chin area.
The nerve to masseter passes 1. deep to the medial pterygoid muscle 2. posterior to temporomandibular joint 3. superior to zygomatic arch to enter the muscle on its medial surface 4. through the mandibular notch to enter the muscle on its medial surface
Anatomy Answer: 4The nerve to masseter passes through the mandibular notch to enter the muscle on its medial surface
To obtain the desired projection of occlusal loads, the floor of the occlusal rest should:
1) Be convex
2) Slope from the marginal ridge towards the contact of the abutment
3) Slope from the contact of abutment towards the marginal ridge
4) Be concave
ADC Test Answer: 2
The floor of the occlusal rest should slope from the marginal ridge toward the contact point of the abutment.
If a cut is made below the cricoid cartilage, which structure might be injured?
1) Inferior laryngeal nerve
2) Recurrent laryngeal nerve
3) Superior laryngeal nerve
4) Both A and B
The recurrent laryngeal nerve runs below the cricoid cartilage and
supplies all the intrinsic laryngeal muscles except for the cricothyroid muscle,
which is supplied by the superior laryngeal nerve. Inferior laryngeal nerve (which supplies the cricothyroid muscle) Recurrent laryngeal nerve (which supplies all other intrinsic laryngeal
muscles except the cricothyroid muscle)
What is the main advantage of using implant-supported dentures in
gerodontology?
1) Improved retention and stability
2) Reduced cost compared to traditional dentures
3) Elimination of the need for oral hygiene
4) Prevention of bone resorption in the jaw
Implant-supported dentures provide superior retention and stability
compared to conventional dentures, which can enhance masticatory function and
patient comfort.
Which of the fibers attached to cementum are most likely to contribute to relapse of tooth rotation:
1) Gingival group of fibers
2) Apical fibers
3) Horizontal fibers
4) Oblique fibers
SOLUTION Gingival group of fibers
Principal fibers of the periodontal ligament rearranges themselves quite rapidly to the position in about 4 weeks.The supra-alveolar gingival fiber take as much as 40 weeks to rearrange around the new position and thus predispose to relapse.
Which local anesthetic is known for its cardiotoxic effects?
1) Lidocaine
2) Bupivacaine
3) Mepivacaine
4) Articaine
Bupivacaine is a long-acting local anesthetic that has been associated with cardiotoxicity, making it important to use with caution.
Contraindication for supraglottic laryngectomy is all except:
1) Tumour involving pyriform sinus
2) Vocal cord fixidity
3) Tumour involving the preepiglottic spread
4) Post cricoid area expansion
Tumour involving the preepiglottic spread is not a contraindication for supraglottic laryngectomy.
Position of needle in relation to medial pterygoid during IANB?
1) Lateral and posterior.
2) Medial and anterior.
3) Lateral and anterior.
4) Medial and posterior.
ADC Test Answer: 1
During an Inferior Alveolar Nerve Block (IANB), the needle is positioned laterally and posteriorly to the medial pterygoid, which is critical for successful anesthesia of the mandibular teeth.
What condition is characterized by bilateral swellings not associated with food smell and associated with lymphadenopathy?
1) Sarcoidosis
2) Lymphoma
3) Tuberculosis
4) Infectious mononucleosis
Sarcoidosis can present with bilateral swellings and lymphadenopathy, often without any associated symptoms like food smell.
Patients with which condition may require premedication with antibiotics before dental procedures?
1) Asthma
2) Congenital heart defects
3) Alzheimer’s disease
4) Hypertension
Patients with certain congenital heart defects are at an increased risk of bacterial endocarditis and may require prophylactic antibiotics before dental treatment.
An approach to an impacted mandibular molar is achieved by:
1) Envelop flap
2) Bayonet flap
3) L-shaped flap
4) All of the above
All the listed flap techniques (envelop flap, bayonet flap, and L-shaped flap) are types of mucoperiosteal flaps used in oral surgery to access impacted teeth. Each flap has its indications and advantages, and the choice of flap depends on the specific clinical situation. The L-shaped flap, also known as Ward's incision, is commonly used for the removal of impacted teeth due to its effectiveness in providing access while minimizing tissue trauma.
What is the role of dental professionals in preventing abuse and neglect?
1) To provide legal advice to patients
2) To recognize signs and report suspicions
3) To conduct investigations into suspected cases
4) To provide therapy for victims
Dental professionals are trained to recognize signs of abuse and neglect and have a responsibility to report their suspicions to the appropriate authorities.
What is the most benign tumor among the following options?
1) Kaposi sarcoma
2) Burkitt's lymphoma
3) Adenolymphoma
4) Acinic cell carcinoma
Adenolymphoma, also known as Warthin’s tumor, is a benign glandular tumor typically found in the parotid gland, characterized by two layers of eosinophilic epithelial cells.
Most potent opioid:
1) Fentanyl
2) Alfentanil
3) Buprenorphine
4) Sufentanil
Sufentanil is the most potent opioid, being 500-1,000 times more potent than morphine.
The term cold sterilization has been employed to refer to 1. physical methods of sterilization 2. prolonged exposure to 20° C 3. exposure to low temperature steam 4. chemical disinfection
Microbiology Answer: 4chemical disinfection is cold strelization
Which bacteria is primarily associated with enamel caries?
1) Lactobacillus
2) Actinomyces
3) Streptococcus mutans
4) Porphyromonas gingivalis
S. mutans is a major contributor to enamel caries due to its acidogenic and aciduric properties.
Which two teeth can only be removed by rotation?
1) Maxillary central incisors and mandibular central incisors
2) Maxillary second premolars and mandibular first molars
3) Maxillary central incisors and mandibular second premolars
4) Maxillary first molars and mandibular central incisors
These teeth have single roots and are not multi-rooted, allowing for removal by rotation only.
What is the standard of care in dental records?
- The highest level of care possible
- The average care provided by dentists in the community
- The care mandated by the patient's insurance policy
- The care required by dental board regulations
The standard of care is based on what a reasonably prudent dentist would do under the same or similar circumstances, which is often reflected in the community average.
Which blood vessels have softer walls?
1) Arteries
2) Veins
3) Arterioles
4) Capillaries
Veins have thinner walls and are more compliant than arteries, allowing them to accommodate varying volumes of blood.
The tonsillar lymph node is situated at the level of:
1) Angle of the mandible
2) C6 vertebrae
3) Jugulodigastric crossing
4) Clavicle
ADC Test Answer: 1
The tonsillar lymph node, also known as the jugulodigastric node, is located near the angle of the mandible, making it significant in evaluating head and neck pathologies.
The most appropriate gingival contour of a fixed partial denture connector is
1) concave.
2) convex.
3) flat.
4) none
A convex contour ensures proper hygiene by reducing plaque accumulation and
facilitates better gingival health.
Concave contours can trap debris and promote inflammation.
Where would you expect to find the mylohyoid muscle in relation to the periphery of a full lower denture?
1) Mandibular buccal in the midline
2) Mandibular lingual in the first premolar area
3) Mandibular lingual in the midline
4) Mandibular disto buccal area
ADC Test Answer: 2
The mylohyoid muscle forms the floor of the mouth and is located lingually, particularly in the area of the first premolars.
What is the most common complication associated with the extraction of an impacted third molar?
1) Nerve damage
2) Infection
3) Prolonged bleeding
4) Dry socket
Pericoronitis is the most common complication associated with impacted third molars, which can occur before or after extraction if proper care is not taken.
The growth of the alveolar process has a major effect on
1) Anteroposterior jaw relationship
2) Vertical jaw relationship
3) Both
4) None of the above
While doing preparation for an FMC crown prep on tooth 16 in a 20-year-old man, a pinpoint pulp exposure occurred. How would you best manage the situation?
1) Do DPC immediately under rubber dam then tell the patient about the situation
2) Tell the patient immediately and do pulpotomy
3) Start RCT then describe the situation to the patient
4) Tell the patient that you have encountered an inadvertent incident while preparing and refer him to a specialist
ADC Test Answer: 1
Direct Pulp Capping (DPC) is the most appropriate management strategy for a small pinpoint pulp exposure.
What is a common mechanism for condylar fractures of the mandible? 1) Direct blow to the angle of the mandible 2) Fall onto the chin 3) Gunshot wounds 4) Road traffic accidents
Oral and Maxillofacial Surgery Answer: 2Condylar fractures often result from a fall onto the chin, which drives the condyles into their fossae. This mechanism of injury is common in falls and other similar accidents.
Which of the following is an indication for a pulpotomy on a primary tooth?
1) Radiographic evidence of internal root resorption.
2) Involvement of interradicular bone with no fistula
3) Involvement of interradicular bone with a fistula
4) Signs and symptoms of reversible pulpitis.
Pulpotomy is indicated when inflammation is limited to the coronal pulp, preserving vitality of the radicular pulp.
Laminar flow is mainly dependent on:
1) Density
2) Viscosity
3) Solubility
4) Molecular weight
Laminar flow mainly depends on viscosity of gas while turbulent flow is more dependent on density.
The function of cobalt in a cast chromium-cobalt-nickel alloy is to 1. increase resistance to shear and tensile stresses 2. provide tarnish resistance 3. increase tendency for higher ductility and decrease casting shrinkage 4. contribute strength, rigidity, and hardness
Dental Material Answer: 4Cobalt in a cast chromium-cobalt-nickel alloy contribute to strength, rigidity, and hardness
Tyrosine kinase inhibitors are useful in the management of ?
1) Acute myeloid leukemia
2) Small cell carcinoma of lung
3) Gastrointestinal stromal tumors
4) Neurofibromatosis
Tyrosine kinase inhibitors are used in the treatment of: Chronic myeloid leukemia
Acute lymphoblastic leukemia ( philadelphia chromosome positive cases )
Head and neck malignancies
Non small cell carcinoma lung
Gastrointestinal stromal tumours
Hepatocellular cancer
Renal cell carcinoma
Pancreatic cancer
Colorectal cancer
What is the primary concern when treating geriatric patients with
cognitive impairment?
1) The absence of caries
2) Comfortable chair position
3) Financial considerations
4) Behavior management
Behavior management is crucial when treating geriatric patients with cognitive impairment as it helps in ensuring their cooperation and reducing anxiety, which can significantly affect the quality of care provided.
Which of the following is NOT an example of dental malpractice?
1) Failure to diagnose oral cancer
2) Intentionally causing harm to a patient
3) Unintentionally causing harm to a patient due to negligence
4) Providing treatment that does not meet the standard of care
Dental malpractice typically involves unintentional acts of
negligence or omission that result in harm to the patient. Intentionally causing
harm is a criminal act and not considered malpractice, although it can lead to
both civil and criminal consequences.
What is the purpose of the American with Disabilities Act (ADA) as it relates to dental care?
1) To set minimum standards for accessibility in dental offices
2) To require dentists to provide free care to patients with disabilities
3) To mandate that all dental procedures must be performed under general anesthesia for patients with special needs
4) To establish a government-funded program for special needs dentistry
The ADA requires that dental offices provide equal access to care for individuals with disabilities.
For composite resin preparations, cavosurface enamel margins are bevelled because
1. A bevelled margin produces a more favorable surface for etching.
2. A bevelled margin improves the edge strength of the composite resin.
3. After etching, the bonding agent reduces microleakage.
4. The procedure eliminates the need to polish the restoration.
1) (1) (2) (3)
2) (1) and (3)
3) (2) and (4)
4) (4) only
Beveling the margins of a cavity preparation for composite resin has specific benefits:
- Favorable surface for etching: A bevelled margin increases the surface area for bonding and improves the etching process.
- Reduces microleakage: Proper bonding after etching can help seal the margins and reduce the risk of microleakage.
- Edge strength: While beveling can improve aesthetics and bonding, the primary reasons are related to etching and sealing.
The following prevent re-uptake of noradrenaline
1) isoprenaline
2) dopamine
3) clomipramine
4) propranolol
Is a TCA- block neuronal uptake of noradrenaline and serotonin.
The orthodontic correction of which of the following is most easily retained
1) Anterior cross bite
2) Crowding
3) Diastema
4) Spacing
SOLUTION The key to success is to use an appliance that is both comfortable, easily retained and predictable such as a simple Hawley retainer with recurve springs or a fixed labial-lingual appliance (including a vertical removable arch for ease of adjustment with a recurve spring to jump the cross-bite). Both of these appliances work by tipping the maxillary teeth forward so they are in a normal dental relationship to the mandibular teeth.
Not true regarding sevoflurane:
1) MAC is higher than isoflurane
2) Blood gas coefficient is higher than desflurane
3) Potency more than isoflurane
4) Sevoflurane is less cardio depressant than isoflurane
Sevoflurane is less cardio depressant than isoflurane.
Mercury is dangerous when it turns into vapor form because of:
1) It is accumulative and causes liver poisoning
2) It is accumulative and causes kidney poisoning
3) It induces neoplasia in the liver
4) It is accumulative and causes brain poisoning
Mercury vapor can accumulate in the body and is particularly harmful to the central nervous system, leading to neurological damage.
The primary canine is usually exfoliated between the ages of 1. 5 and 6 years 2. 10 and 11 years 3. l3 and l4years 4. 8 and 9years
Dental Anatomy Answer: 2The primary canine is usually exfoliated between the ages of 10 and 11 years
What are the cells in cementum that line its boundary with the periodontal ligament (PDL) with cytoplasmic processes directed towards cementum?
1) Cementoblasts
2) Osteoblasts
3) Fibroblasts
4) Odontoblasts
Cementoblasts are responsible for forming cementum and have processes that extend towards the PDL.
Of the following, the most difficult impaction to extract is:
1) Mesioangular
2) Vertical
3) Distoangular
4) Horizontal
Distoangular impactions of mandibular molars are often considered the most challenging to extract due to their position and the amount of bone that must be removed to access the tooth. The angulation of the tooth can complicate the extraction process, requiring more extensive surgical intervention. Additionally, the removal of bone in this area can weaken the ramus of the mandible, increasing the risk of fracture during extraction.
When injecting local solution in the maxilla on the buccal side, the technique is?
1) Intra osseous
2) Supra periosteal
3) Sup mucosal
4) Intra septal
The correct technique for injecting local solution in the maxilla on the buccal side is the supra periosteal technique.
What is the best treatment for chronic periodontitis?
1) Scaling and root planing alone.
2) Antibiotics alone.
3) Surgical intervention alone.
4) Combination of scaling, root planing, and surgical intervention with adjunctive antibiotics.
ADC Test Answer: 4
Chronic periodontitis typically requires a multi-faceted approach that includes non-surgical periodontal therapy (scaling and root planing), surgical intervention if necessary, and adjunctive antibiotics to manage the infection effectively.
In what circumstances does a child's consent for dental treatment supersede a
parent's refusal?
1) When the child is a mature minor
2) When the parent is not present
3) When the child is financially independent
4) When the treatment is not in the child's best interest
A mature minor is a child who has the capacity to understand the
nature, purpose, and potential risks of the treatment, and in such cases, their
consent may override a parent's refusal.
You notice that your patient's submandibular lymph nodes are enlarged. You would look for potential infection sites in the?
1) Hard palate, upper lip, upper central incisor, and lower first molar
2) Hard palate.
3) Hard palate and upper lip.
4) Hard palate, upper lip, and upper central incisor.
The correct answer is hard palate, upper lip, upper central incisor, and lower first molar.
What is the GDC guideline for recording patient consent?
- Verbal consent is sufficient if witnessed by a dental nurse
- Consent must be recorded in the patient's own words
- Written consent is mandatory for all treatments
- Consent must be obtained before every appointment
The GDC guideline emphasizes that consent should be recorded in the patient's own words to ensure that the patient's understanding and agreement to the treatment plan are clearly documente4) This is a critical aspect of informed consent and patient-centered care.
What is the sensory nerve supply to the temporalis muscle?
1) V2
2) V3
3) Facial nerve
4) Glossopharyngeal nerve
The temporalis muscle receives both sensory and motor innervation from the mandibular branch of the trigeminal nerve (V3).
Following orthodontic treatment of rotated tooth, relapse is most commonly due to
1) Oblique fibers
2) Supracrestal fibers
3) Sharpey’s fibers
4) Apical fibers
Solution This is because elastic supracrestal fibres remodel extremely slowly and can still exert forces capable of displacing a tooth even at 1 year after removal of an orthodontic appliance.
Where is bone lost most in periodontal disease?
1) Buccal surface
2) Lingual surface
3) Interdental (approximal) areas
4) Palatal surface
Bone loss in periodontal disease is most pronounced in the interdental areas, where plaque accumulation and inflammation are often greatest.
You are interested in finding out what the risk indicators are for a rare form of oral cancer. What type of study would be the most appropriate for addressing this issue?
1) Cohort
2) Prevalence study
3) Clinical trial
4) Case-control study
5) Case-series
A case-control study is ideal for investigating risk factors for rare diseases, as it compares individuals with the disease to those without.
The secretory product of odontoblasts is:
1) Topocollagen.
2) Calcium salts.
3) Mantle dentin.
4) Hydroxyapatite
Dentinogenesis is the formation of dentin by odontoblasts of mesenchymal origin
located at the periphery of the dental pulp
Dentinogenesis is initiated by the inductive influence of the enamel organ
involving molecular signaling pathways, such as Wnt, Runx-2, and TGF-?. In the
molar tooth, dentinogenesis starts at the late bell stage, and occurs in the
crown as well as root regions.
Predentin, the first organic matrix secreted by odontoblasts, is composed by
proteoglycans, glycoproteins, and collagens.
What neurotransmitter is responsible for closing pre-capillary sphincters?
1) Acetylcholine
2) Serotonin
3) Nor-adrenaline
4) Substance P
Nor-adrenaline is responsible for vasoconstriction and can close pre-capillary sphincters, regulating blood flow.
What is Sunday bite related to?
1) Angle’s class I with anterior open bite
2) Angle’s class I with anterior deep bite and posterior cross bite (unilateral)
3) Angle’s class II
4) Angle’s class III
SOLUTION Children and adults with a skeletal Class II relationship and an underlying skeletal Class II jaw relationship position the mandible forward in a “Sunday bite,” making the occlusion look better than it really is.
In a visual examination for caries, what change in the tooth surface texture
or color is a reversible sign of early enamel demineralization?
1) White spot
2) Brown spot
3) Black spot
4) Red spot
A white spot on the tooth surface indicates incipient caries, which is a reversible form of enamel demineralization. Brown or black spots are typically associated with more advanced stages of caries, while red spots are not a common sign of dental caries.
Which blood pressure reading is considered “prehypertension” according to recent classifications? 1) <120/80 mmHg 2) 120-139/80-89 mmHg 3) 140-159/90-99 mmHg 4) ?180/110 mmHg
Pathology and Medicine Answer: 2Prehypertension is defined as a blood pressure between 120-139 systolic and 80-89 diastolic.
The sulphur containing amino acid is: 1. Cystine 2. Proilne 3. Arginine 4. Isoleucine
Biochemistry Answer: 1Cystine is sulphur containing amino acid
Porcelain binds to metal in PFM crown by:
1) Metallic bind
2) Mechanical bond
3) Chemical bond
4) Both 2 and 3
Porcelain binds to metal in metal ceramic restorations by mechanical interlocking and chemical bonding.
The adherent metallic oxides, which are formed during the degassing cycle form a good chemical bond with porcelain.
Tin oxide and Indium oxide are formed from precious metal alloys while chromium oxide is formed from base metal alloys.
The sprue former should be attached to the wax pattern 1. on a flat surface 2. in an area where the anatomy is not critical 3. at the thinnest point 4. at the point of greatest bulk
Dental Material Answer: 4The sprue former should be attached to the wax pattern at the area of more bulk
Which of the following best describes ergonomic hazards in dentistry?
1) Exposure to infectious diseases
2) Improper use of dental materials
3) Repetitive motions and awkward postures
4) Chemical exposure from disinfectants
Ergonomic hazards involve physical strain from repetitive motions and awkward postures that can lead to musculoskeletal disorders among dental professionals.
In orthodontic treatment, the forces applied should not exceed the ________________ in order to avoid injuries to the tissues.
1) Arterial blood pressure
2) Muscular forces of facial muscles
3) Masticatory retrusion
4) Capillary blood pressure
SOLUTION Optimum orthodontic force is one, which moves teeth most rapidly in the desired direction, with the least possible damage to tissue and with minimum patient discomfort. Oppenheim and Schwarz following extensive studies stated that the optimum force is equivalent to the capillary pulse pressure, which is 20-26 gm/sq.
From a clinical point of view, optimum orthodontic force has the following characteristics:
1) Products rapid tooth movement
2) Minimal patient discomfort
3) The lag phase of tooth movement is minimal
4) No marked mobility of the teeth being moved
From a histologic point of view the use of optimum orthodontic force has the following characteristics:
1) The vitality of the tooth and supporting periodontal ligament is maintained
2) Initiates maximum cellular response
3) Produces direct or frontal resorption
Which of the following statements about informed consent is true?
1) It is
only necessary for surgical procedures.
2) It must always be documented in writing.
3) It is a one-time process that does not require updates.
4) It should be tailored to the individual patient's needs and understanding.
;Informed consent should be personalized to ensure that the patient fully understands the information relevant to their treatment.
Elgiloy arch wire is a 1. Cobalt chromium nickel alloy 2. Gold alloy 3. Optical fiber arch wire 4. Beta titanium arch wire
Dental Material Answer: 1Elgiloy arch wire is a Cobalt chromium nickel alloy
What is the correct order for removing personal protective equipment (PPE)
at the end of a procedure?
1) Face shield, gown, mask, gloves
2) Gloves, mask, gown, face shield
3) Gown, face shield, mask, gloves
4) Mask, gloves, gown, face shield
The correct order for removing PPE is to first remove the gloves, then the mask, followed by the gown, and finally the face shiel4) This order helps to prevent contamination of the skin and mucous membranes during the removal process.
What is the first line of treatment for a patient with a lower lateral tooth extracted while the alveolus heals to cover the gap?
1) Conventional cantilever
2) Partial denture
3) Both
4) None
A partial denture is often the preferred option to replace missing teeth during the healing process, providing functional and aesthetic support.
What is the most common occupational health problem among dentists ?
1) Tinnitus
2) Musculoskeletal pain
3) Hypertension
4) Hearing loss
Musculoskeletal pain was the most common occupational health problem, with 78% of the dentists reporting it. This is consistent with findings from other studies that highlight the prevalence of musculoskeletal disorders in the dental profession due to prolonged sitting postures, repetitive movements, and manual dexterity required in dental practice.
Which type of tumor is characterized by having a "cribriform" or "Swiss cheese" pattern?
1) Acinic cell carcinoma
2) Adenocystic carcinoma
3) Burkitt's lymphoma
4) Pleomorphic adenoma
Adenocystic carcinoma is known for its cribriform pattern and often invades surrounding tissues, including nerve sheaths.
Trichloroacetic acid, a strong acid, has been used by dentists for chemical cautery of hypertrophic tissue and aphthous ulcers; its mechanism of action is:
1) Thermodynamic action
2) Activation of tissue enzymes
3) Osmotic pressure
4) Protein precipitation
ADC Test Answer: 4
Trichloroacetic acid works by precipitating proteins, which helps in cauterizing tissues and managing lesions.
When a tooth is replanted after avulsion and presents no pain, the most likely diagnosis is:
1) External resorption
2) Internal resorption
3) No significant damage
4) Pulp necrosis
ADC Test Answer: 2
Internal resorption may occur in avulsed teeth, especially if they were outside the socket for an extended period, even without presenting immediate pain.
Informed consent for children typically requires consent from:
1) The child
only
2) The healthcare provider
3) The child's guardian or parent
4) The child's teacher
The child's guardian or parent
Explanation: Parents or guardians are responsible for providing
consent for medical treatment for minors.
Can informed consent be obtained from a patient who is under the influence of
sedation?
1) Yes, as long as the patient can still communicate their wishes
2) No, sedation impairs the patient's ability to understand and make decisions
3) Yes, because the patient's consent was obtained before administration of
sedation
4) It depends on the type and level of sedation
Informed consent must be obtained when the patient is fully conscious and has the mental capacity to comprehend the information provide4) If sedation affects the patient's ability to make informed decisions, consent should be obtained before administration.
What is the best way to handle a chemical spill in a dental office?
1) Clean it up with paper towels and dispose of them in regular trash
2) Follow the Material Safety Data Sheet (MSDS) guidelines for the specific chemical
3) Ignore it if it seems minor
4) Wait for someone else to handle it
Occupational Hazards Answer: 2Following the MSDS guidelines ensures that the spill is handled safely and effectively, minimizing risks to staff and patients.
What is least important for the success of a post?
1) Diameter
2) Material
3) Luting agent
4) Length
While the luting agent is important, the diameter, material, and length of the post are more critical factors influencing the success of the post in retaining the restoration.
What type of study model is commonly used in research that leads to
a common answer?
1) Longitudinal study
2) Cross-sectional study
3) Case-control study
4) Cohort study
Cross-sectional studies are observational studies that analyze data from a population at a specific point in time to determine the prevalence of a particular outcome or disease. They are often used to provide a snapshot of a population's health and can lead to common answers regarding the prevalence of certain conditions or exposures. They are different from longitudinal studies, which follow the same individuals over time to observe changes; case-control studies, which compare individuals with and without a disease to identify risk factors; and cohort studies, which follow a group of individuals with a common characteristic to observe the development of a disease or outcome.
Site of alpha-oxidation of fatty acid Is:
alpha-oxidation of fatty acid occurs in Mitochondria
According to Pell & Gregory classification, if the occlusal plane of the
impacted tooth is between the occlusal plane and the cervical line of the second
molar, the type of impaction is:
1) Class A
2) Class B
3) Class C
4) Class D
Pell & Gregory classification categorizes impactions based on the relationship of the impacted tooth to the second molar and the occlusal plane. Class B impaction indicates that the occlusal surface of the impacted tooth is located between the occlusal plane and the cervical line of the adjacent second molar, suggesting a moderate level of difficulty in extraction.
permanent maxillary First molar teeth normally has four root canals
Which of the following antihypertensive drugs should not be used in a patient on Lithium in order to prevent Lithium Toxicity?
1) Clonidine
2) Beta blockers
3) Calcium Channel Blockers
4) Diuretics
Diuretics increase sodium loss in urine and increase lithium retention.
The obturating material of choice for primary teeth following complete pulpectomy is:
1) Zn phosphate cement and formocresol combination paste
2) Quick setting hydroxide cement
3) Zinc oxide and eugenol cement
4) Gutta-percha
ADC Test Answer: 3
Zinc oxide eugenol cement (ZOE) is preferred for obturation in primary teeth due to its good sealing properties and resorbability, which is important for the eventual eruption of the succedaneous permanent tooth.
Which anesthetic is known to penetrate the bone better?
1) Lidocaine
2) Articaine
3) Bupivacaine
4) Mepivacaine
Articaine has a unique chemical structure that facilitates better penetration of bone, making it very effective in dental anesthesia, especially for inferior alveolar nerve blocks.
Best clinical sign for adequate reversal is:
1) Spontaneous eye opening
2) Spontaneous limb movements
3) Able to protrude tongue
4) Able to lift head > 5 seconds
If patient is able to lift the head > 5 seconds it is considered the best clinical sign as it corresponds to train of four ratio > 0.7.
The bull's eye type of appearance in IOPA (Intraoral Periapical radiograph) is
seen in:
1) Lingually placed mandibular third molar
2) Buccally placed mandibular third molar
3) Inverted mandibular third molar
4) Distoangular impaction
The bull's eye appearance on an IOPA radiograph is typically
associated with a lingually positioned mandibular third molar. This appearance
is due to the radiographic projection of the tooth and surrounding structures,
which can create a characteristic circular pattern that resembles a bull's eye.
What is the first step in managing trismus?
1) Prescribing muscle relaxants
2) Applying heat to the affected area
3) Administering corticosteroids
4) Performing surgical intervention
Initial treatment for trismus includes applying heat and administering anti-inflammatory medications to reduce muscle spasm.
When calcospherites fail to fuse during calcification of dentin matrix then
1 Interglobular dentin is formed
2 Dead tracts are found in formed dentin
3 Irregular dentin results
4 None
Interglobular Dentin:
Sometimes, mineralization of dentin begins in small globular areas that fail to coalesce into a homogenous mass.
These zones are known as globular dentin or interglobular spaces. Thus, demonstrating defect of mineralization and not of matrix formation, the dentinal tubules pass uninterruptedly through interglobular dentin.
Diffusion hypoxia is caused by:
1) Ether
2) Halothane
3) N2O
4) Trielene
At the end of surgery when nitrous oxide delivery from machine is stopped the gradient between alveoli and blood is reversed and nitrous oxides gushes into the alveoli replacing oxygen from there creating hypoxia called as diffusion hypoxia.
What is the primary goal of geriatric dentistry?
1) Complete restoration of all dentition
2) Preventive care only
3) Cosmetic improvement of smiles
4) Pain management and function maintenance
The foremost goals of geriatric dentistry focus on alleviating
pain, maintaining function, and preserving quality of life rather than achieving
complete restorations.
What type of information should be included in the patient's medical history?
1) Only dental information
2) Only medical information
3) Both dental and medical information
4) Dental, medical, lifestyle, and family history information
A comprehensive medical history should include the patient's dental information, medical conditions, current medications, allergies, and surgeries. Additionally, lifestyle factors such as tobacco and alcohol use, and family history of diseases can be relevant to the patient's oral health and treatment decisions.