Dentist Abroad
Which of the following is NOT a requirement for informed consent in dental treatment?
- The patient must be competent to make decisions
- The treatment options must be fully explained to the patient
- The patient must be informed of the risks and benefits of each option
- The patient must sign the consent form in triplicate
Informed consent requires that the patient is competent to make decisions, the treatment options are fully explained, the risks and benefits are communicated, and the patient understands the nature and purpose of the proposed treatment.
The principle of justice in healthcare ethics refers to:
1) The obligation to tell the truth
2) Fair distribution of healthcare resources
3) The duty to act in the best interest of the patient
4) Respecting the patient's wishes
Ethics and Jurisprudence Answer: 2Justice involves ensuring that patients receive fair and equitable access to healthcare resources and services, regardless of their background.
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.
What is the primary mechanism by which fluoride helps prevent dental caries?
1) It acts as an antibiotic.
2) It increases the pH of saliva.
3) It inhibits the demineralization of enamel.
4) It promotes remineralization of enamel.
ADC Test Answer: 3
Fluoride forms a protective layer on the tooth enamel that inhibits the activity of bacterial enzymes responsible for demineralization, thereby preventing dental caries.
What is the legal age at which a patient can typically provide informed
consent for their dental treatment?
1) 16 years old
2) 18 years old
3) 21 years old
4) Varies by state
The legal age for informed consent is not uniform across all states. Some states allow minors to consent to their own dental treatment at ages 16 or 17, while others require parental or guardian consent until the age of 18. It is essential for dentists to know the laws of the state in which they practice.
Which management technique is typically used for displaced mandibular fractures in the tooth-bearing region? 1) Conservative treatment 2) Intermaxillary fixation 3) Open reduction internal fixation (ORIF) 4) Extraction of the fractured teeth
Oral and Maxillofacial Surgery Answer: 3Displaced or mobile fractures in the tooth-bearing region of the mandible usually require surgical intervention through open reduction internal fixation (ORIF) to properly realign and stabilize the fracture.
Which antibiotics are commonly used for periodontitis?
1) Amoxicillin and Clindamycin
2) Tetracycline and Penicillin V
3) Ciprofloxacin and Metronidazole
4) Azithromycin and Doxycycline
While Tetracycline and Penicillin V are antibiotics that can be used to treat periodontal infections, they are not as commonly prescribed as Azithromycin and Doxycycline, which are both effective against the anaerobic bacteria often implicated in periodontitis. Azithromycin is a macrolide antibiotic and Doxycycline is a tetracycline derivative. These medications are commonly used due to their broad spectrum of antimicrobial activity and their ability to penetrate into the periodontal tissues effectively. They are often prescribed in combination with other antibiotics or as part of a systemic antimicrobial therapy for the treatment of moderate to severe periodontitis
What factor is most important to reduce dental irradiation risk?
1) Speed of the film
2) Rectangular collimation
3) Type of x-ray machine
4) Patient shielding
Using rectangular collimation significantly reduces the amount of radiation exposure by limiting the x-ray beam to the area of interest.
What is the primary purpose of maintaining dental records?
1) To fulfill legal obligations
2) To provide continuity of care
3) To assist in malpractice claims
4) All of the above
Dental records serve multiple purposes, including legal compliance, continuity of care, and providing evidence in malpractice claims.
What is the role of the healthcare team in the informed consent process?
1) To convince the patient to accept the proposed treatment
2) To provide all necessary information and support the patient's decision
3) To make the treatment decision for the patient
4) To document the consent process
The healthcare team plays a crucial role in ensuring that the patient has a full understanding of their condition and the available treatment options, and in facilitating the patient's decision-making process.
Which of the following is a benefit of computerized dental records?
1) Increased physical storage space
2) Improved accuracy and legibility
3) Higher costs associated with paper
4) Reduced accessibility
Computerized records help prevent errors associated with handwriting and improve overall clarity.
Which treatment is most effective for a patient exhibiting type I hypersensitivity to a kiwi?
1) Antihistamines
2) Corticosteroids
3) Immediate epinephrine
4) Intravenous fluids
For severe anaphylactic reactions related to type I hypersensitivity, such as from kiwi, immediate epinephrine administration is crucial for reversal of symptoms.
The development of lateral canals can be attributed to:
1) Faulty restoration technique
2) Cracks in Hertwig’s epithelial root sheath
3) Genetic anomalies
4) External dental trauma
ADC Test Answer: 2
Lateral canals form due to disruptions in the Hertwig's epithelial root sheath during tooth root development, creating additional channels in the root structure.
What is the critical pH for fluorapatite?
1) 5.5
2) 6.2
3) 4.5
4) 7.0
Fluorapatite has a critical pH of 4.5, below which demineralization occurs. Fluorapatite has a higher resistance to acid damage compared to hydroxyapatite, with a critical pH of 4.5 for demineralization.
The most pronounced effect on the oral microflora of a reduction in rate of salivary flow is a 1. significant increase in number of oral bacteria 2. shift towards a more acidogenic microflora 3 significant decrease in number of oral bacteria 4 shift towards a more aerobic micro flora
Microbiology Answer: 2The most pronounced effect on the oral microflora of a reduction in rate of salivary flow is a shift towards a more acidogenic microflora
What is the primary goal of behavior management in pediatric dentistry for a child with special needs?
1) Completing the dental treatment as quickly as possible
2) Minimizing the child's fear and anxiety
3) Maximizing parental involvement during procedures
4) Ensuring the child is fully sedated for all dental visits
Behavior management in pediatric dentistry for children with special needs focuses on creating a positive experience and reducing fear and anxiety.
The normal growing mandible exhibits which of the following characteristics?
1) Resorbs along the posterior rami.
2) Grows more vertically than horizontally.
3) Has completed 100% of its growth by age 13 in females.
4) Has latent post-pubertal growth potential.
Oral Embryology Answer: 4Mandibular growth continues into adulthood, with post-pubertal growth potential contributing to facial development and occlusal changes.
What is the natural buffer in saliva that helps neutralize acidity and combat
demineralization?
1) Phosphoric acid (H3PO4)
2) Bicarbonate (HCO3-)
3) Carbonic acid (H2CO3)
4) Lactic acid
Saliva contains bicarbonate, which acts as a natural buffer to help maintain oral pH equilibrium and protect against demineralization.
The Nitrate which does not undergo first pass metabolism is:
1) Isosorbide mononitrate
2) Nitroglycerine
3) Pentaerythritol tetranitrate
4) Isosorbide dinitrate
In humans, isosorbide mononitrate is not subject to first pass metabolism in the liver.
This reduces the intra- and interindividual variations in plasma evels and leads to predictable and reproducible clinical effects.
The working time of zinc-phosphate cement:
1) Is shortened if moisture condenses on the mixing slab during the mixing process.
2) Is lengthened if the powder is mixed with the liquid as quickly as possible.
3) Is shortened if the mixing slab is cooled.
4) Is shortened by adding a small quantity of powder to the liquid a minute prior to start mixing.
FPD and RPD Answer: 1
Explanation: Moisture
condensation increases the reactivity of
zinc-phosphate cement, accelerating the setting
reaction and shortening the working time.
The most common failure in constructing porcelain-to-metal restorations is due to:
1) Improper metal framework
2) Rapid heating
3) Poor porcelain layering
4) Inadequate glazing
ADC Test Answer: 1
The failure of porcelain-to-metal restorations frequently arises from a poorly constructed metal framework, which compromises the bond between the two materials.
What do pulp tester readings signify?
1) Exaggerated response indicates irreversible pulpitis
2) No response indicates reversible pulpitis
3) Exaggerated response indicates reversible pulpitis
4) No response indicates healthy pulp
An exaggerated response to pulp testing typically indicates reversible pulpitis, while no response suggests irreversible pulpitis.
What is the primary feature 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 is the best description of the morphology of periodontal ligament fibers?
1) Elastic
2) Striated
3) Non-striated
4) Wavy
The fibers of the periodontal ligament exhibit a wavy morphology, which allows for flexibility and resilience to the stresses placed on them by occlusion.
Which of the following is considered a biological hazard in a dental practice? 1) Chemical spills 2) Noise from dental equipment 3) Bloodborne pathogens 4) Ergonomic strain
Occupational Hazards Answer: 3Biological hazards include exposure to infectious agents such as bloodborne pathogens (e.g., HIV, Hepatitis B and 3) that can pose risks to dental professionals.
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.
Which bacteria is most commonly associated with acute dentistry-related infections?
1) Streptococcus viridans
2) Staphylococcus aureus
3) Escherichia coli
4) Neisseria meningitidis
Streptococcus viridans is part of the normal oral flora and frequently implicated in dental infections, particularly endocarditis following dental procedures.
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
A partial denture is often the preferred option to replace missing teeth during the healing process, providing functional and aesthetic support.
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.
A man who smokes 2 packets of cigarettes a day and drinks would have an increased risk of developing oral cancer of:
1) 11 times
2) 13 times
3) 47 times
4) 25 times
Smoking and alcohol consumption significantly increase the risk of oral cancer, with studies showing a risk increase of up to 47 times for heavy users.
Which antihypertensive medication type may cause gingival hyperplasia? 1) ACE inhibitors 2) Beta-blockers 3) Calcium channel blockers 4) Diuretics
Pathology and Medicine Answer: 3Calcium channel blockers, like Amlodipine, are known to cause gingival hyperplasia.
In cases of suspected abuse or neglect, dental professionals should:
1) Keep detailed records of injuries and treatment
2) Ask leading questions to determine the cause of injuries
3) Diagnose the patient with abuse or neglect
4) Treat the injuries and ignore the potential causes
Dental professionals should maintain thorough records of the patient's injuries and treatment, which may be valuable in legal proceedings.
What is the primary purpose of maintaining dental records?
- Billing and insurance claims
- Delivery of quality patient care and follow-up
- Marketing the dental practice
- Personal reference for the dentist
Dental records are primarily kept to ensure continuity of care, facilitate good patient care, and provide a clear history of treatments.
What is the main function of EDTA in endodontics?
1) Decalcification of dentine
2) Cleaning debris from root canal
3) Achieving hemostasis
4) Enhancing bonding strength
ADC Test Answer: 1
EDTA is primarily used for its ability to decalcify dentin and facilitate the removal of the smear layer during root canal treatment.
Which fibers are most resistant to periodontitis?
1) Transeptal fibers
2) Intergingival fibers
3) Circular fibers
4) Dentogingival fibers
Transeptal fibers are more resistant to periodontitis due to their position and function in maintaining the integrity of the periodontal attachment between adjacent teeth.
What role does the dental assistant play in managing an anxious patient?
1) To perform all clinical procedures
2) To provide medication to patients
3) To offer emotional support and reassurance
4) To make treatment decisions
Dental assistants can play a crucial role in offering emotional support, helping to soothe anxious patients during visits.
When treating a patient with an intellectual disability, which of the following is NOT a component of informed consent?
1) Ensuring the patient understands the risks and benefits of the proposed treatment
2) Having a legal guardian present to sign the consent form
3) Allowing the patient to ask questions about the treatment
4) Providing the patient with written information at their comprehension level
Informed consent requires that the patient themselves understands and consents to the treatment, not necessarily that a legal guardian must be present to sign.
The largest sized pororsity is:
1) Micro porosity.
2) Pin hole porosity
3) Suck back porosity
4) Gas inclusion porosity
Main causes of the porosity of alloy castings are:
1) Solidification defects
2) Trapped gases
3) Residual air
1.
Solidification defects cold lead to two different manifestations of porosity;
localised shrinkage porosity and Microporosity.
Localised shrinkage porosity is caused by insufficient feeding of the alloy
during solidification.
Microporosity is also caused by solidification shrinkage, but generally happens
in fine grain alloys when the solidification is too rapid for the microvoids to
segregate. This in turn is caused the mould or casting temperature being too
low.
2. Trapped gases
Many metals dissolve or occlude gases when they are molten. On solidification,
these gases are forced out of the casting causing what is usually called pinhole
porosity. These voids are rather small.
3. Incomplete casting
If the molten alloy is prevented from fully or partially filling the mould and
incomplete or even no casting at all can result.
What is the distance of the maxillary sinus from the upper canine?
1) 3.8 mm
2) 6.9 mm
3) 1.9 mm
4) 2.8 mm
The distance from the maxillary sinus to the upper canine is 6.9 mm, which is the greatest distance compared to the premolars and molars.
What protein has I, T, and C subcomponents in muscle fibers?
1) Myosin
2) Actin
3) Troponin
4) Tropomyosin
Troponin is a regulatory protein complex in muscle fibers that includes I (inhibitory), T (tropomyosin-binding), and C (calcium-binding) subcomponents.
Which of the following antiviral drugs cannot be given orally?
1) Zidovudine
2) Zalcitabine
3) Acyclovir
4) Iodoxuridine
Idoxuridine acts as an antiviral agent against DNA viruses by inhibiting thymidilate phosphorylase and viral DNA polymerases.
The effect of Idoxuridine results in the inability of the virus to reproduce or to infect/destroy tissue.
This product is available in the following dosage forms:Solution and Ointment
Which type of bridge is not ideal for posterior cantilever due to heavy
occlusal forces?
1) Single retainer cantilever
2) Multiple-splinted abutment
3) Cantilever with two abutment teeth
4) Fixed-fixed bridge
a single retainer cantilever is not ideal for posterior cantilever due to heavy occlusal forces, which can cause increased stress on the abutment tooth.
The canine eminence is 1. associated with the mandibular canine only 2. the labial ridge on the crown of canine 3. an osseous structure surrounding the root of a canine on the facial aspect 4. the prominent ridge on the lingual surface of a maxillary canine
Dental Anatomy Answer: 3The canine eminence is an osseous structure surrounding the root of a canine on the facial aspect
Which of the following factors contributes to increased xerostomia in elderly
patients?
1) Increased salivary gland function
2) Systemic medications
3) Higher water intake
4) Increased oral hydration
Many medications taken by older adults, such as antihypertensives
and antidepressants, can lead to reduced saliva production, resulting in
xerostomia.
After completion of endodontic chemomechanical debridement
1) all tissue should be removed from the root canal system.
2) permanent inflammation may be cause4)
3) the root canal should be sterile.
4) some areas of the root canal system may be incompletely cleaned
Despite thorough chemomechanical debridement, it is common for certain areas within the complex anatomy of the root canal system to remain inadequately cleaned. This can occur due to the presence of lateral canals, isthmuses, or other anatomical variations that are difficult to access, leading to potential areas of infection or inflammation.
Which of the following is the drug of choice in bupivacaine induced VT:
1) Lidocaine
2) Phenytoin
3) Digoxin
4) Quinidine
The drug of choice is bretylium but in its absence lignocaine can be used.
There are some enzymes that cause protein to coagulate rather than to produce simpler compund These are known as 1. lab enzymes 2. coagulase 3. proteolytic enzymes 4. enmycin
Microbiology Answer: 1There are some enzymes that cause protein to coagulate rather than to produce simpler compund These are known as lab enzymes
What information should be clearly noted in the dental record when multiple dental practitioners are involved?
- The name of the primary dentist only
- The name and specialty of each practitioner who renders treatment
- The fee charged by each dentist
- The patient's preferred dentist
It is essential to have a clear record of which practitioner provided specific treatments for legal and quality assurance purposes.
Informed consent is particularly important in which of the following
scenarios?
1) When the patient is fully aware of their medical condition
2) When the treatment is routine and low-risk
3) When the procedure is invasive and carries significant risks
4) When the patient has a family member present
Informed consent is crucial for invasive procedures that have significant risks to ensure that patients are fully aware and can make informed decisions about their care.
The most mineralized part of the dentin is:
1) Peritubular dentin
2) Intertubular dentin
3) Primary dentin
4) Secondary dentin
ADC Test Answer: 1
Peritubular dentin is highly mineralized and surrounds the dentinal tubules, contributing significantly to the strength of the dentin.
Which of the following is a loop diuretic used to manage hypertension?
1) Amiloride
2) Furosemide
3) Chlorothiazide
4) Spironolactone
Furosemide is a loop diuretic that acts on the kidneys to increase urine output, thereby lowering blood pressure.
What hormone increases blood glucose and decreases potassium?
1) Insulin
2) Cortisol
3) Glucagon
4) Adrenaline
Cortisol increases blood glucose levels by promoting gluconeogenesis and decreases serum potassium levels by enhancing renal excretion.
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.
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.
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 ($I propto frac{1}{d^2}$).
Elevation of aldosterone, in blood results in High 'Na' and high 'K' in urine resulting in acidic urine and body alkalosis
In which direction does the palatal root of the upper first molar usually curve towards?
1) Facial / buccal
2) Lingual
3) Mesial
4) Distal
ADC Test Answer: 1
The palatal root of the maxillary first molar typically curves towards the buccal, creating challenges in accessing and treating its canals.
Which of the following cements bonds to tooth structure, has an anticariogenic effect, has a degree of translucency and does not irritate the pulp? 1. Polycarboxylate cement 2. Resin cement 3. Silicate cement 4. Glass Ionomer cement
Dental Material Answer: 4GIC has an anticarious anticariogenic effect, It binds to tooth structure, Does not irritate the pulp tissue
Following extraction of the molar teeth, which statement is correct?
1) The ridge height is lost more from the maxilla than from the mandible.
2) The maxillary ridge will get more bone lost from the palatal aspect than the buccal.
3) The mandibular arch is relatively narrower than the maxillary arch.
4) Compared with the pre-resorption state, the mandibular ridge will lose more bone from the lingual aspect than the buccal one.
ADC Test Answer: 2
After molar extraction, the maxillary ridge tends to lose more bone from the palatal aspect due to the direction of the resorptive forces and the presence of the palatal blood vessels and nerves.
The auriculotemporal nerve carries some fibers which are . 1. motor to masseter muscle 2. secretory to parotid gland 3. afferent from the carotid body 4. sensory to lining of tympanic cavity
Anatomy Answer: 4The auriculotemporal nerve carries some fibers which are sensory to lining of tympanic cavity
In regards to HIV infection, which of the following is the earliest finding?
1) Kaposi sarcoma on the palate
2) Reduced hemoglobin
3) Infection with pneumocystic carinii
4) Reduction in white cell count
ADC Test Answer: 4
A reduction in white blood cell count, particularly CD4 T cells, is one of the earliest indicators of HIV infection and immune system compromise.
What is the primary concern when integrating gerodontology into general
dental practice?
1) Lack of specialized training
2) Inadequate chairside manner
3) Difficulty with insurance reimbursements
4) Patient compliance with treatment
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.
What is the most common site for oral cancer within the mouth?
1) Hard palate
2) Lateral borders of the tongue
3) Floor of the mouth
4) Buccal mucosa
The lateral borders of the tongue are the most frequently affected site for oral cancer, particularly in the context of squamous cell carcinoma.
What type of epithelium lines exocrine glands?
1) Squamous
2) Transitional
3) Columnar or cuboidal
4) Stratified
Exocrine glands are typically lined with columnar or cuboidal epithelial cells, which are specialized for secretion.
Which of the following is NOT a type of dental charting?
- Periapical charting
- Panoramic charting
- Full mouth series charting
- Bitewing charting
Panoramic radiographs are not a type of charting.
What is the difference between fluorapatite and carbonate substituted
hydroxyapatite?
1) Fluorapatite is less soluble than carbonate substituted hydroxyapatite
2) Fluorapatite is more soluble than carbonate substituted hydroxyapatite
3) They have the same solubility
4) Fluorapatite does not occur in tooth structure
Fluorapatite is a form of hydroxyapatite that has incorporated fluoride ions, which makes it more resistant to acid attacks and thus less soluble compared to carbonate substituted hydroxyapatite.
What is the normal prothrombin time?
1) 10-12 seconds
2) 11-15 seconds
3) 15-20 seconds
4) 20-23 seconds
Prothrombin time is a measure of blood clotting, with a normal range between 11-15 seconds.
Continuous education and training for dental staff on infection control practices are vital for maintaining a safe environment and reducing the risk of infection.
Disto buccal root of upper first molar is supplied by:
1) Buccal nerve
2) Middle superior alveolar nerve
3) Posterior superior alveolar nerve
4) Infra orbital nerve
The disto buccal root of the upper first molar is supplied by the posterior superior alveolar nerve.
Which of the following anaesthetic agent can be given by both intravenous and intramuscular routes:
1) Thiopentone
2) Propanidid
3) Ketamine
4) Fentanyl-droperidol
Ketamine can be administered via intravenous, intramuscular, oral, and intrathecal routes. It is the second method of choice for induction in children, with the first being inhalational.
What is the primary mode of transmission for hepatitis B in a dental
setting?
1) Respiratory droplets
2) Bloodborne pathogens
3) Fomites
4) Airborne particles
Hepatitis B is mainly transmitted through blood and other bodily
fluids. In a dental setting, the risk of transmission is highest through
exposure to contaminated sharp instruments, needlesticks, and mucosal contact
with infectious materials.
What is the primary role of osteoclastic cells in the body?
1) Bone formation
2) Bone resorption
3) Collagen synthesis
4) Mineralization
Osteoclasts are specialized cells responsible for bone resorption, breaking down bone tissue and playing a crucial role in bone remodeling.
What defines the etiology of localized alveolar osteitis?
1) Bacterial infection
2) Oestrogen effects from medications
3) Excessive local fibrinolytic activity
4) Poor oral hygiene
Localized alveolar osteitis is often attributed to excessive fibrinolytic activity following trauma to the alveolar bone, rather than solely due to bacterial infections.
What is the most effective preventive care for dental caries in geriatric
patients?
1) Daily flossing
2) Professional cleanings every six months
3) Fluoride applications
4) Routine radiographs
Frequent fluoride applications can strengthen enamel and reduce
caries incidence, especially in those with reduced salivary flow.
What happens to the solubility of hydroxyapatite when it undergoes carbonate
substitution?
1) It increases
2) It decreases
3) It remains the same
4) It becomes insoluble
Carbonate substitution in hydroxyapatite increases its solubility, making it more susceptible to decay.
A patient telephones and tells you he has just knocked out his front tooth but
that it is still intact. Your instructions should be to
1) put the tooth in water and come to your office at the end of the day.
2) place the tooth in milk and come to your office immediately. .
3) put the tooth in alcohol and come to your office immediately.
4) place tooth under the tongue and come to your office immediately.
Placing an avulsed tooth in milk is recommended because it helps preserve the vitality of the periodontal ligament cells. Milk has a similar osmolality to that of human cells, which can help keep the cells alive until the patient can receive professional dental care. Immediate treatment is crucial for the best chance of successful re-implantation.
The gold casting alloy indicated for use in dental bridges is:
1) Type I
2) Type II
3) Type III
4) Type IV
ADC Test Answer: 4
Type IV gold casting alloys are suitable for use in bridges as they offer adequate strength and resistance to wear.
A patient presents with a history of using an old diamond bur. What consequence might arise from this?
A. Faster cutting
B. Excessive heat generation
C. Reduced pain during procedures
D. Improved tooth surface finish
Using an old diamond bur can lead to inadequate cutting efficiency, forcing the dentist to apply excessive pressure which generates excessive heat—this can damage the dental pulp.
What cement do you use to bond an alumina core ceramic crown?
1) Panavia
2) Resin modified glass ionomer cement
3) Zinc phosphate
4) Glass ionomer cement
Panavia is a resin cement specifically designed for bonding ceramic restorations, providing strong adhesion to alumina cores.
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.
The artery chiefly responsible for blood supply to the mandible is inferior alveolar artery
Epoxy resins are compatible with which of the following impression material :
1) Polysulphide impression material
2) Polyether impression material
3) Agar
4) Alginate
Epoxy resins
· Abrasion resistance is many times greater than gypsum
· More expensive
· Undergoes 0.1 – 0.2% shrinkage, thus their shrinkage is approximately equal to gypsum.
· Their detail reproduction is better.
· Hydrocolloids, polysulfides are not compatible with them.
What concentration of sodium fluoride toothpaste is prescribed for patients aged 10 years and over with high caries risk?
1) 1,000 ppm
2) 2,800 ppm
3) 5,000 ppm
4) 10,000 ppm
Sodium fluoride toothpaste with 2,800 ppm is recommended for patients aged 10 years and above who have a high risk of caries.
The primary mandibular central incisors usually erupt at 1. 6-8 months 2. 2 years 3. 10 - 13 months 4. 52 - 72 weeks
Dental Anatomy Answer: 1The primary mandibular central incisors usually erupt at 6-8 months
Which of the following can be an effective non-pharmacological technique to manage dental anxiety?
1) Immediate extraction
2) Encouraging distracted breathing
3) Ignoring the patient's fear
4) Avoiding all discussion about the procedure
Distracted breathing techniques can help patients manage anxiety by focusing their attention away from the stressor.
Most bacterial endotoxins are composed of 1. pure carbohydrates 2. mucoprotein complexes 3. pure lipids 4. lipoprotein-polysaccharide complexes
Microbiology Answer: 4Most bacterial endotoxins are composed of lipoprotein-polysaccharide complexes
Which one of the following is used in water fluoridation?
1) SnF2
2) 1.23% APF
3) H2SiF2
4) CaSiF2
ADC Test Answer: 3
Hydrofluorosilicic acid (H2SiF2) is widely used for water fluoridation, replacing hydroxyapatite with more decay-resistant fluoroapatite in tooth enamel.
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.
What is the relationship between fluoride concentration and dental caries
resistance?
1) Low fluoride levels lead to greater resistance.
2) High fluoride levels lead to greater resistance.
3) There is no relationship between fluoride and caries resistance.
4) Fluoride levels do not affect caries resistance.
Higher fluoride levels can lead to the formation of fluorapatite, which is more resistant to acid attack than hydroxyapatite, thereby reducing the risk of dental caries.
Cardio stable anaesthetic:
1) Etomidate
2) Propadanil
3) Ketamine
4) Thiopental
Etomidate is known for its cardiovascular stability.
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.
What is the most common finding after a dental complaint in young children?
1) Acute periodontal abscess.
2) Chronic periodontal abscess.
3) Apical abscess.
4) Chronic alveolar abscess.
ADC Test Answer: 3
Young children are more prone to developing apical abscesses due to their immature immune systems and the prevalence of dental caries.
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.
What is the main histological feature of pemphigus vulgaris?
1) Acanthosis
2) Acantholysis
3) Hyperkeratosis
4) Basal cell hyperplasia
Acantholysis, or the loss of connections between keratinocytes, is a hallmark of pemphigus vulgaris, leading to the formation of blisters.
Least likely to exhibit cross-sensitivity with amide or ester local anesthetics.?
1) Tetracaine (pontocaine)
2) Lidocaine (Xylocaine)
3) Dyclonine (Dyclone)
4) Mepivacaine (Carbocaine)
Dyclonine (Dyclone) is the least likely to exhibit cross-sensitivity with amide or ester local anesthetics.
How should the floor of the pulp chamber in molars be prepared?
1) Swab and dry with cotton wool and excavate
2) Use a round bur to flatten the floor
3) Under-cut walls
4) Use a flat-end fissure bur to make it leveled
Preparing the pulp chamber floor involves drying the area and then carefully excavating to ensure a clean and manageable working area without damaging surrounding tissues.
What is a common appearance of vertical tooth fracture?
1) Perio abscess-like appearance
2) Displacement of fragments
3) A clear film of pus
4) Tooth mobility
ADC Test Answer: 1
Vertical root fractures often present as periodontal abscesses, as the fracture involves the root structure and can lead to localized periodontal inflammation.
Which of the following is NOT a component of personal protective equipment
(PPE) for dental healthcare workers?
1) Masks
2) Gloves
3) Gowns
4) Eye protection
PPE includes masks,
gloves, and gowns, which are essential to protect against the transmission of
infections. However, eye protection such as goggles or face shields is also a
critical component to prevent the spread of pathogens through splashes or
aerosols.
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.
The initial treatment for acute necrotizing ulcerative gingivitis
(ANUG) typically involves:
1) Antibiotics only
2) Topical steroids
3) Surgical intervention
4) Debridement and mouth rinse with H2O2
ANUG is a severe form of gingivitis that requires immediate and aggressive treatment to prevent its progression. The primary treatment involves thorough debridement of necrotic tissue and plaque from the affected areas to reduce the bacterial load and promote healing. Antiseptic mouth rinses, such as hydrogen peroxide (H2O2), are also commonly used to further reduce bacteria and aid in the healing process. Antibiotics may be necessary in severe cases with systemic involvement.
A 22-year-old woman presents with acute gingival hypertrophy and spontaneous bleeding. What is the most likely diagnosis?
1) Myelogenous leukaemia
2) Infectious mononucleosis
3) Thrombocytopenic purpura
4) Gingivitis of local aetiological origin
The symptoms and blood analysis suggest a hematological disorder, with myelogenous leukaemia being a strong possibility.
What is the purpose of using articulating paper during a stainless steel crown procedure?
1) To remove caries.
2) To reduce occlusal surface.
3) To check occlusion.
4) To mix cement.
Articulating paper is used to check occlusion during a stainless steel crown procedure.
Which behavior should a dentist encourage to help reduce anxiety in patients?
1) Withholding information about the procedure
2) Encouraging patients to express their fears
3) Telling jokes unrelated to the procedure
4) Dismissing the patient's concerns as minor
Allowing patients to voice their concerns creates a supportive environment and can help alleviate anxiety.
Bitewing radiography is the main special test used to help in the diagnosis of proximal caries. What is a reasonable summary of the diagnostic accuracy of bitewing radiography for proximal caries diagnosis?
1) Moderate sensitivity and low specificity
2) Moderate sensitivity and moderate specificity
3) Moderate sensitivity and high specificity
4) High sensitivity and moderate specificity
5) High sensitivity and high specificity
Bitewing radiography is known for its high sensitivity and specificity in detecting proximal caries, making it a valuable diagnostic tool.
Chelating agent contraindicated in iron and cadmium poisoning
1) Penicillamine
2) Des ferroxamine
3) EDTA
4) BAL
Dimercaprol (British antilewisite; BAL) 1.
2. As an adjuvant to Cal. Disod. Edentate in lead poisoning.
3. As an adjuvant to penicillamine in Cu poisoning and in Wilson’s disease – 300 mg/day i.m. for 10 days every second month.
It is contraindicated in iron and cadmium poisoning, because the dimercaprol-Fe and dimercaprol-Cd complex is itself toxic.
How is acetylcholine released?
1) Diffusion
2) Exocytosis
3) Active transport
4) Osmosis
Acetylcholine is released from nerve terminals into the synaptic cleft via exocytosis, a process where vesicles fuse with the presynaptic membrane.
Which anesthetic method is generally avoided in patients with certain neurological conditions?
1) Topical anesthetic
2) Inhalation sedation
3) Intravenous sedation
4) Local anesthetic
Intravenous sedation can present risks for patients with neurological conditions due to the potential for respiratory depression and impaired airway reflexes.
What is the GDC's requirement for the storage of patient records?
- They must be kept in a secure, locked cabinet
- They must be kept in a fireproof safe
- They must be kept in a format that is easily accessible and understandable
- They must be kept in a location that is accessible only to the dentist
The GDC requires that patient records be kept in a format that is easily accessible and understandable to ensure that dental professionals can provide effective care based on accurate and up-to-date information.
What cement is used to temporarily cement a crown?
1) Glass ionomer cement
2) Resin cement
3) Zinc oxide eugenol (ZOE)
4) Composite resin
ZOE is commonly used for the temporary cementation of crowns due to its ease of use and sedative properties.
What is the purpose of the amber line in Winter's classification?
1) It shows the depth of the tooth below the alveolar crest
2) It indicates the amount of bone covering the tooth
3) It shows the path of eruption
4) It identifies the position of the tooth in the jaw
The amber line is drawn from the crest of interdental bone between the 1st and 2nd molars and extends posteriorly, showing how much bone covers the impacted tooth.
What type of respiratory protection is recommended for dental personnel
during aerosol-producing procedures?
1) N95 mask
2) Surgical mask
3) Powered air-purifying respirator (PAPR)
4) Full-face respirator
N95 masks are recommended for dental personnel during
aerosol-producing procedures as they provide a higher level of protection
against airborne particles compared to surgical masks. PAPRs and full-face
respirators may be used in certain situations, but N95 masks are sufficient for
most dental procedures.
A successful inferior alveolar nerve block will produce anesthesia of the?
1) Lower lip and mandibular teeth.
2) Lower lip.
3) Lower lip, mandibular teeth and labial gingivae of the anterior mandibular teeth
4) Lower lip, mandibular teeth and labial gingivae of the anterior and buccal gingivae of the posterior mandibular teeth.
A successful inferior alveolar nerve block will produce anesthesia of the lower lip, mandibular teeth, and labial gingivae of the anterior mandibular teeth.
Secondary infections in HIV-infected patient are classified under
1) Class I
2) Class II
3) Class III
4) Class IV
General Medicine Answer: 4
Common opportunistic infections associated with HIV include: cryptococcal meningitis. toxoplasmosis.
The alpha-2 function pre-synaptically at the neuromuscular junction is
responsible for:
1) Facilitation of transmitter release
2) Inhibition of transmitter release
3) Activation of cholinergic receptors
4) Blockade of sodium channels
Alpha-2 receptors located pre-synaptically can inhibit the release of the neurotransmitter acetylcholine.
Which material is commonly used for direct pulp capping?
1) Glass ionomer
2) Composite resin
3) Calcium hydroxide
4) Amalgam
Calcium hydroxide is commonly used for direct pulp capping due to its ability to promote healing and dentin formation.
Fastest route of absorption of local anaesthetic is?
1) Intercostal
2) Epidural
3) Brachial
4) Caudal
The fastest route for absorption of LA is intercostal block, due to close location of blood vessel around the nerve, so that is why LA are rapidly taken by in intercostal block.
Digoxin:
1) clearance is by the liver
2) increases conduction of the AV node
3) decreases the force of myocardial contraction
4) may cause atrial tachycardia in overdosage
Digoxin is a positive inotrope, hence it increases the force of myocardial contraction and may be effective in heart failure.
Digoxin has a long half-life and is given once daily. It is cleared by the renal system and hence renal impairment requires the reduction of digoxin dose.
Arrhythmias, such as atrial tachycardia, may be a sign of digoxin toxicity.
Digoxin toxicity is enhanced if there are 67 electrolyte disturbances, especially hypokalaemia, hypomagnesaemia and hypercalcaemia.
What is the primary treatment for syncope during a dental procedure?
1) Administering fluids intravenously
2) Placing the patient in the supine position
3) Inhalation of ammonia salts
4) Giving oxygen
Laying the patient flat with their legs elevated helps increase blood flow to the brain and restore consciousness.
The first heart sound relates to 1. Closure of the A-V valves 2. Opening of the A-V valves 3. Excitation of the auricles 4. Closure of the aortic valve
Physiology Answer: 2The first heart sound relates to Opening of the A-V valves
When is the MMR vaccine typically administered?
1) At birth and 6 months
2) At 1 year and again at 4 years
3) At 2 years and 5 years
4) At 6 months and 1 year
The MMR (measles, mumps, rubella) vaccine is usually given at 1 year of age and again at 4 years of age to ensure adequate immunity.
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
Which of the following is a contraindication for the use of local
anesthesia in a geriatric patient?
1) Hypertension
4) Cardiovascular disease
3) Diabetes
4) All of the above
All of the listed conditions can influence the patient's response
to local anesthetics. It is important to carefully consider the patient's
medical history and current medications before administering local anesthesia.
What is the primary advantage of computerized dental records in terms of patient care?
- Enhanced data security
- Improved legibility and reduced errors
- Reduced waiting times for appointments
- Increased marketing opportunities
Digital records can enhance patient care by reducing errors associated with handwritten notes and improving legibility, which facilitates better communication among dental professionals and safer treatment planning.
A 4 year old has generalized bone loss, mobile teeth and generalized calculus.
Which condition should NOT be included in the differential diagnosis?
1) Cyclic neutropenia
2) Papillon-Lefevre syndrome.
3) Chediak-Higashi syndrome.
4) Crouzon syndrome.
Crouzon syndrome is associated with craniofacial abnormalities, not generalized
bone loss or periodontal issues.
Crouzon syndrome is caused by a mutation in the FGFR2 gene, which is important for bone formation
What enzyme assists microorganisms in the dentin caries process?
1) Enolase
2) Collagenase
3) Amylase
4) Lactoferrin
Enolase plays a crucial role in the metabolic processes of bacteria involved in dentin caries, facilitating their growth and acid production.
The smear layer present on the root canal wall after cleaning and shaping is
best removed by using
1) EDTA
2) hydrogen peroxide.
3) chlorhexidine.
4) isopropyl alcohol.
EDTA effectively removes the smear layer, allowing for better canal cleaning and
sealer penetration.
Marginal leakage of a composite resin restoration will
1) not be detectable.
2) be minimized by use of a bonding agent.
3) decrease with longevity.
4) noneof above
Bonding agents create a seal between the composite resin and the tooth structure, reducing marginal gaps and leakage.
Which of the following is NOT a key aspect of record keeping according to the GDC guidance?
1) Complete and accurate patient records
2) Documenting discussions with patients
3) Keeping financial information in the dental record
4) Recording consent for treatment
Financial information should not be included in the clinical dental record; it is separate from patient care documentation.
Drugs mostly cross biological membranes by
1) Passive diffusion
2) Active diffusion
3) Active transport
4) Carrier mediated transport
Passive diffusion: The movement of drug across a membrane in a manner driven solely by the concentration gradient.
Which type of antihypertensive agent should be avoided in patients with a history of asthma?
1) ACE inhibitors
2) Calcium channel blockers
3) Non-selective beta-blockers
4) Diuretics
Non-selective beta-blockers, like propranolol, can worsen asthma symptoms due to bronchoconstriction.
The epithelium which covers a healed ulcer is derived from 1. undifferentiated mesenchymal cells of the ulcer 2. intact epithelium at the ulcer margin 3. transformation of fibroblasts to epithelial cells 4. endothelial cells via the blood stream
Oral Pathology Answer: 2The epithelium which covers a healed ulcer is derived from intact epithelium at the ulcer margin
What is the purpose of the principle of nonmaleficence in dental practice?
1) To ensure dentists do not cause harm to patients
2) To justify the use of painful procedures for therapeutic purposes
3) To require dentists to provide only the most expensive treatments
4) To prioritize the dentist's financial success
Nonmaleficence is the principle that guides healthcare professionals, including dentists, to avoid causing harm to patients. It is often paired with beneficence and requires that treatments and care are provided with the intent to do no harm.
What is the most appropriate initial management of a tooth which is sensitive to
percussion but responds normally to electric pulp testing?
1) Pulpectomy.
2) Occlusal assessment.
3) Pulpotomy.
4) Restoration replacement.
Percussion sensitivity may result from occlusal trauma, which can be corrected by adjusting the bite.
A picture of the tongue with an ulcer on the lateral border. What drug causes it?
1) ACE inhibitors
2) Calcium channel blockers
3) Potassium-sparing drugs
4) NSAIDs
ACE inhibitors can cause oral side effects, including ulcers on the tongue and other mucosal surfaces.
A diastema between two maxillary central permanent incisors could be associated
with the followings, EXCEPT
1) a mesiodens.
2) a congenital absence of permanent maxillary lateral incisors.
3) a large labial frenum.
4) adenomatoid odontogenetic tumour
Adenomatoid odontogenic tumors are generally not linked to diastemas; other options can contribute to spacing.
Which muscles are primarily used in swallowing?
1) Masseter and temporalis
2) Genioglossus and palatoglossus
3) Buccinator and orbicularis oris
4) Sternocleidomastoid and trapezius
The genioglossus and palatoglossus muscles play significant roles in the swallowing process by controlling the position of the tongue and the soft palate.
The most common malignant lesion found in the oral cavity is:
1) Ameloblastoma
2) Squamous cell carcinoma
3) Osteosarcoma
4) Adenocarcinoma
ADC Test Answer: 2
Squamous cell carcinoma constitutes approximately 90% of oral malignancies and is often seen as ulcers or lumps in the oral tissues.
9 months of age, is the usual eruption time for 1. primary mandibular canines 2. primary maxillary canines 3. primary maxillary first molars 4. primary lower lateral incisors
Dental Anatomy Answer: 49 months of age, is the usual eruption time for primary lower lateral incis
Most potent inhaled anaesthetic is:
- Halothane
- Isoflurane
- Sevoflurane
- Desflurane
Among the inhalational agents used commonly, halothane is most potent (MAC 0.74%) while isoflurane and sevoflurane have moderate potency (1.15% and 2.0% respectively) and desflurane has low potency (MAC 6.0%).
Which of the following drugs can cause methemoglobinemia?
1) Lidocaine
2) Procaine
3) Prilocaine
4) Bupivacaine
Prilocaine is a local anesthetic that can cause methemoglobinemia.
Morphine can be used in all the following conditions except:
1) Head injury
2) Asthma
3) Hypothyroidism
4) Diabetes
Morphine is contraindicated in head injury for the following reasons: Causes carbondioxide retention – this in turn increases intracranial tension
Therapeutic doses can cause respiratory depression in head injury patients Vomiting, miosis and altered mentation caused by morphine can interfere with assessment of neurological status
Morphine should be avoided in those with bronchial asthma as it can precipitate an attack of asthma.
Dry heat sterilization of paper points without incineration is accomplished at 1. 160°C for 2hours 2. 120°C for l hour 3. 100°C for 2 hours 4. 200°C for 1 hour
Microbiology Answer: 1Dry heat sterilization of paper points without incineration is accomplished at 160°C for 2hours
Which of the following anaesthetic agent can be given by both intravenous and intramuscular routes:
1) Thiopentone
2) Propanidid
3) Ketamine
4) Fentanyl-droperidol
Ketamine can be given by iv, im, oral and intrathecal (spinal) routes.
If an interproximal composite filling fails, what is likely to happen?
1) Overcontouring
2) Undercontouring
3) Overhang
4) Fracture
An improperly placed interproximal composite filling can create an overhang, leading to plaque accumulation and periodontal issues.
What is the purpose of color coding in dental records management?
- To indicate payment status
- To highlight allergies and medical conditions
- To indicate the type of treatment provided
- For aesthetic purposes
Color coding is often used to draw attention to important medical information such as allergies or medical conditions for quick reference.
Impressions taken with which of the following materials are subject to distortion as a result of water sorption? 1. silicone rubber 2. polysulflde polymers 3. zinc oxide-eugenol-paste 4. polyether
Dental Material Answer: 4polyether materials are subject to distortion as a result of water sorption
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 does muscle resistance to insulin in obesity and genetic profile usually
lead to?
1) Type I diabetes
2) Type 2 diabetes
3) Hyperpigmentation
4) Depression
Muscle resistance to insulin in obesity and genetic profile usually leads to type 2 diabetes. This is because insulin resistance occurs when the muscle cells do not respond properly to insulin, resulting in elevated blood sugar levels. Obesity and genetic factors can contribute to the development of insulin resistance, leading to the progression of type 2 diabetes. Hyperpigmentation and depression are not directly related to muscle resistance to insulin in obesity and genetic profile.
What is one of the key principles of the "Four Cs" of record keeping?
1) Complicated
2) Clear
3) Costly
4) Confusing
Records should be presented in a clear and understandable manner to facilitate effective communication and decision-making.
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
Maximum shrinkage after gingival curettage can be expected from tissue that is:
1) Fibroedematous
2) Edematous
3) Fibrotic
4) Formed within an infrabony pocket
Edematous tissue is more likely to shrink after curettage due to the presence of excess fluid.
What is the primary reason for using single-use items in
dentistry?
1) To save costs
2) To enhance patient comfort
3) To prevent cross-contamination
4) To reduce waste
Single-use items are primarily used to prevent cross-contamination and reduce the risk of infection, ensuring patient safety during dental procedures.
The increased venous return to the heart causes: 1. End diastolic volume increase 2. End systolic volume decrease 3. Decrease stroke volume 4. Decreased isovolumetric ventricular contraction.
Physiology Answer: 1The increased venous return to the heart causes End diastolic volume increase
What is the normal resting flow rate for saliva?
1) 0.1-0.3 ml/min
2) 0.1-0.6 ml/min
3) 0.5-1.0 ml/min
4) 1.0-2.0 ml/min
The normal resting saliva flow rate ranges from 0.1 to 0.6 ml/min, while stimulated saliva can increase to 1-2 ml/min.
What is the first step in the "Tell-Show-Do" technique for explaining a dental procedure to an anxious patient?
1) Show the patient what will happen
2) Describe the sensation the patient might feel
3) Tell the patient what you are going to do
4) Perform the procedure
The Tell-Show-Do technique involves explaining the procedure in simple terms, demonstrating it with a model or the patient's hand, and then performing the actual procedure.
Which of the following agents is used for the treatment of Thrombocytopenia secondary to myelosuppressive cancer chemotherapy?
1) Filgrastim
2) Sargramostim
3) Oprelvekin
4) Erythropoietin
Oprelvekin (Interleukin 11) is the only agent approved by the FDA for treatment of thrombocytopenia secondary to myelosuppressive cancer chemotherapy
Filgrastim (G-CSF) and Sargramostim (GM-SCF) are used in the treatment of neutropenia
Erythropoietin is used in treatment of anemia
What suture material is used on lips?
1) Prolene
2) Nylon
3) Vicryl
4) Both 1 and 2
Prolene and nylon are both commonly used suture materials for lip closures due to their strength and minimal tissue reaction.
The mesial and distal walls of a Class I amalgam preparation diverge toward the
occlusal surface in order to
1) resist the forces of mastication.
2) provide resistance and retention form.
3) prevent undermining of the marginal ridges.
4) extend the preparation into areas more readily cleansed
This design feature ensures that the remaining tooth structure is supported and not weakened by the preparation, which is crucial for maintaining the integrity of the tooth.
What is a common side effect of ACE inhibitors?
1) Hyperkalemia
2) Cough
3) Constipation
4) Bradycardia
ACE inhibitors frequently cause a dry cough as a side effect due to bradykinin buildup.
What enzyme assists microorganisms in the dentin caries process?
1) Enolase
2) Collagenase
3) Amylase
4) Lactoferrin
Enolase plays a crucial role in the metabolic processes of bacteria involved in dentin caries, facilitating their growth and acid production.
What antibiotic is used to manage a superinfected herpetic lip lesion?
1) Ciprofloxacin
2) Metronidazole
3) Cefuroxime
4) Doxycycline
Cefuroxime is effective against a range of bacteria that may superinfect herpetic lesions, making it a suitable choice for treatment.
Which clotting factor is primarily associated with initiating the extrinsic pathway of coagulation in DIC?
1) Factor VII
2) Factor X
3) Factor V
4) Factor XII
In DIC, tissue factor (TF) binds with coagulation factor VII, triggering the extrinsic coagulation pathway.
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 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.
How does fluoride in saliva promote tooth remineralization?
1) It forms hydrogen bonds with phosphate ions in the apatite structure.
2) It forms a more stable crystal structure with calcium called fluorapatite.
3) It reacts with carbonate ions to form calcium carbonate.
4) It produces an alkaline environment that dissolves hydroxyapatite.
Fluoride ions in saliva can replace hydroxyl ions in the hydroxyapatite lattice, creating fluorapatite, which is more resistant to acid attack.
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.
Thymol is preservative used for:
1) Halothane
2) Isoflurane
3) Desflurane
4) Enflurane
Halothane is stored in amber-colored bottles and contains thymol 0.01% as a preservative to prevent decomposition by light.
What artery provides nourishment to the TMJ?
1) Superficial temporal artery
2) Maxillary artery
3) Facial artery
4) Inferior alveolar artery
The superficial temporal artery, a branch of the maxillary artery, provides blood supply to the temporomandibular joint (TMJ).
What is the largest possible cavosurface angle?
1) 90 degrees
2) 100 degrees
3) 110 degrees
4) 120 degrees
The largest possible cavosurface angle in dental restorations is typically around 110 degrees, which helps in achieving a proper seal and retention.
The penicillin with the best gram negative spectrum is ampicillin
The immunoglobulin secreted in Bile is 1. IgG 2. 1gM 3. IgA 4. IgE
Biochemistry Answer: 3The immunoglobulin secreted in Bile is IgA
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
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.
Which of the following is NOT a type of informed consent?
1) Implied consent
2) Verbal consent
3) Written consent
4) Digital consent
The recognized types of informed consent are implied, verbal, and written. Digital consent is not formally recognized as a distinct type.<
A wax pattern made in the mouth will shrink appreciably as it is cooled to room temperature because :
1) The thermal expansion coefficient of wax is very high
2) The thermal expansion coefficient of wax is very low
3) Melting temperature is very high
4) Melting temperature is very low
A wax pattern made in the mouth will shrink appreciably as it is cooled to room temperature because the coefficient of thermal expansion of wax is very high.(This is the property which describes the thermal energy transport in watts per second through a specimen 1cm thick with a cross sectional area of 1 cm2 when the temperature differential between the surfaces of the specimen perpendicular to the heat flow 10 K) Co efficient of thermal expansion is defined as the change in length per unit of the original length of a material when its temperature is raised 10K.
A reversible white spot lesion indicates early demineralization that can be reversed with proper care and management
What is the significance of a tooth undergoing 30-40% mineral loss for
radiographic detection of caries?
1) It indicates the lesion is only visible with advanced imaging techniques
2) It is the threshold for a lesion to be considered a cavity
3) It means the lesion is likely to be visible on a radiograph
4) It signifies that the tooth is beyond repair
Radiographs typically detect lesions that have undergone significant mineral loss, which is roughly 30-40%. At this stage, the lesion is usually large enough to be seen on a radiograph.
What is the most common cause of pain in elderly patients with dental
implants?
1) Peri-implantitis
2) Implant fracture
3) Implant rejection
4) Nerve damage
Peri-implantitis, an inflammatory process affecting the tissues
surrounding the implant, is a common cause of pain and discomfort in patients
with dental implants.
Slowest induction and recovery is with:
1) Halothane
2) Isoflurane
3) Methoxyflurane
4) Desflurane
Methoxyflurane has the highest blood gas partition coefficient (15), resulting in the slowest induction and recovery.
A removable partial denture rest should be placed on the lingual surface of a canine rather than on the incisal surface because:
1) Less leverage is exerted against the tooth by the rest.
2) The enamel is thicker on the lingual surface.
3) Visibility and access are better.
4) The cingulum of the canine provides a natural recess that does not need to be prepared.
FPD and RPD Answer: 1Lingual rests provide better mechanical advantage by minimizing leverage and torque forces on the abutment teeth, preserving their health and stability.
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.
A 30 year old pregnant woman developes tuberculosis. Which of the following antitubercular drugs should not be used:
1) INH
2) Rifampicin
3) Streptomycin
4) Ethambutol
Streptomycin is contraindicated in pregnant women because of fetal ototoxicity.
Which of the following statement is not true about diuretics:
1) Acetazolamide is a carbonic acid anhydrase stimulant
2) Thiazides act on cortical diluting segment of loop of Henle
3) Frusemide is a high ceiling diuretic
4) Spironolactone is an aldosterone antagonist
Acetazolamide is a carbonic acid anhydrase stimulant Acetazolamide, non-competitively (but reversibly) inhibits carbonic anhydrase in proximal tubular cells.
Which of the following is a common sign of periodontal disease?
1) Tooth mobility
2) Bleeding gums
3) Bad breath
4) All of the above
Signs of periodontal disease include tooth mobility, bleeding gums, and bad breath, indicating inflammation and infection.
What is a common cause of facial angioedema?
1) Cough medicine
2) ACE inhibitors
3) Antihistamines
4) Statins
Facial angioedema is frequently precipitated by ACE inhibitors, which are known to induce this reaction in sensitive individuals.
In patients with anxiety disorders, what is the most common pharmacological option used in the dental setting?
1) Nitrous oxide
2) General anesthesia
3) Local anesthetic
4) Restraints
Nitrous oxide is commonly used for anxiety control due to its safety, rapid onset, and quick recovery time during dental procedures.
After performing an apicoectomy, which of the following should be placed in the
bony defect prior to suturing the flap?
1) Corticosteroids.
2) Nothing.
3) Oxidized cellulose.
4) Bone wax.
In most cases, after an apicoectomy, it is standard practice to leave the bony defect empty (nothing placed) to allow for natural healing and bone regeneration. The area is typically sutured closed without the addition of materials, as this can promote better healing and reduce the risk of complications.
'Programme Operation' in Community health care is same as:
1) Treatment
2) Approval
3) Treatment Planning
4) Diagnosis
In community health care, "Programme Operation" refers to the implementation and
execution of various health programs and interventions. This includes providing
treatment to individuals, ensuring that approved protocols and guidelines are
followed, planning and organizing treatment strategies, and diagnosing health
conditions. Therefore, "Programme Operation" can be equated to the concept of
treatment in community health care.
To prolong the setting time of glass ionomer cement (GIC), one can:
1) Cool down the mixing slab
2) Increase the amount of powder
3) Add more water
4) Decrease mixing time
ADC Test Answer: 1
Cooling the slab on which GIC is mixed can extend the setting time; however, this might negatively affect the cement's strength.
The reaction used for estimating free amino, groups in proteins is: 1. Ninhydrin test 2. Deamination with HNO2 3. Biuret test 4. Formol titration
Biochemistry Answer: 2The reaction used for estimating free amino, groups in proteins is Deamination with HNO2
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 of the following enzymes is active in adipocytes following a heavy meal?
1) Glycogen phosphorylase
2) Glycerol kinase
3) Hormone-sensitive triacylglyceride lipase
4) Phosphatidate phosphatase
The enzyme phosphatidate phosphatase converts phosphatidic acid to diacylglycerol during synthesis of triacylglycerides. The function of adipose tissue is the storage of fatty acids as triacylglycerols in times of plenty and the release of fatty acids during times of fasting or starvation. Fatty acids taken in by adipocytes are stored by esterification to glycerol-3-phosphate.
Glycerol kinase is not present to any great extent in adipocytes, so that glycerol freed during lipolysis is not used to reesterify the fatty acids being released.
The enzyme triacylglyceride lipase is turned on by phosphorylation by a cyclic AMP-dependent protein kinase following epinephrine stimulation.
What is the minimum platelet level at which dental extractions can be safely performed?
1) 50 x 109/L
2) 75 x 109/L
3) 100 x 109/L
4) 150 x 109/L
Surgical procedures can be performed if platelet levels are above 50 x 109/L.
What percentage of children suffer from dental trauma?
1) 5% at age 8
2) 11% at age 12
3) 13% at age 15
4) All of the above
The percentages of children suffering from dental trauma increase with age, with 5% at age 8, 11% at age 12, and 13% at age 15.
The essential ingredient of dental inlay investment are :
1) Quartz, cristobalite
2) β hemihydrate
3) α hemihydrate
4) Ammonium phosphate
The essential ingredients of the dental inlay investment employed with the conventional gold casting alloys are a-hemihydrate of gypsum, quartz, or cristobalite, which are allotropic forms of silica.
The primary purpose of surgical therapy for the treatment of periodontitis is to
1) apically position the flap.
2) eliminate periodontal pockets.
3) remove the ulcerated epithelium of the periodontal pocket.
4) improve access for removal of local etiologic factors.
Surgical therapy, such as flap surgery, aims to expose root surfaces and deep
periodontal pockets.
This improves visibility and access for scaling, root planning, and debridement,
which are critical for removing the etiologic factors of periodontitis (e.g.,
plaque and calculus.
Eliminating these factors allows tissues to heal and reduces pocket depths.
A patient returns from holiday with diarrhea and vomiting after eating street food. What is the likely diagnosis?
1) Hepatitis A
2) Norovirus infection
3) Gastroenteritis
4) Food poisoning
Hepatitis A is often associated with consuming contaminated food or water, especially in areas with poor sanitation.
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.
The placement of a retentive pin in the proximal regions of posterior teeth
would most likely result in periodontal ligament perforation in the
1) mesial of a mandibular first premolar.
2) distal of a mandibular first premolar.
3) distal of a mandibular first molar.
4) mesial of a mandibular first molar.
The mesial aspect of the mandibular first molar is often more prone to periodontal ligament perforation when placing retentive pins due to the anatomy of the tooth and the proximity of the root to the periodontal ligament. The mesial root is typically larger and has a more complex canal system, which can increase the risk of perforation if the pin is not placed carefully.