Dentist Abroad
What is the term for the risks that must be discussed with a patient before
treatment?
1) Minor risks
2) Unlikely risks
3) Insignificant risks
4) Material risks
Material risks are those that are most relevant to the patient and should be disclosed prior to treatment.
Developing roots will split when the:
1) Epithelial diaphragm forms too many lateromedial extensions.
2) Dental follicle cells migrate into the epithelial diaphragm.
3) Cementoblasts fail to develop on and stabilize the root’s surface.
4) Periodontal ligament forms too soon.
Oral Embryology Answer: 1Excessive extensions of the epithelial diaphragm during root development result in root splitting and the formation of supernumerary roots.
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 penicillin with the best gram negative spectrum is ampicillin
How much lidocaine is in 3 cartridges of 2% lidocaine?
1) 66 mg
2) 132 mg
3) 44 mg
4) 88 mg
Each cartridge contains 36 mg of lidocaine (1.8 ml x 20 mg/ml), so 3 cartridges contain 108 mg (3 x 36 mg).
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.
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.
Which of the following is a common form of neglect that can lead to significant dental problems?
1) Failure to provide dental care
2) Forcing a child to eat only sugary foods
3) Physical abuse to the head and neck region
4) Emotional abuse
Neglect often manifests as the failure to provide essential dental care, leading to severe dental problems.
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.
One of the side-effects of prilocaine is
1) Gastric bleeding
2) Porphyria
3) Photophobia
4) Methemoglobinemia
Methemoglobinemia is a condition in which the iron within hemoglobin is oxidized from the ferrous (Fe2+) state to the ferric (Fe3+) state, resulting in the inability to transport oxygen and carbon dioxide.
usually results from exposure to oxidizing substances (such as nitrates or nitrites, aniline dyes, or medications, including lidocaine, prilocaine, phenazopyridine hydrochloride (Pyridium], and others)
Which of the following medications is known to potentially cause a lichenoid reaction?
1) Amoxicillin
2) Beta blockers
3) Paracetamol
4) Antibiotics
Beta blockers and certain other medications, including NSAIDs and antimalarials, can cause lichenoid drug reactions, characterized by oral lesions resembling lichen planus.
Which of the following best describes the concept of "informed refusal"?
1) A patient agreeing to treatment without understanding the risks
2) A patient declining treatment after being fully informed of the risks and benefits
3) A dentist refusing to treat a patient
4) A patient who is unable to make decisions about their care
Ethics and Jurisprudence Answer: 2Informed refusal occurs when a patient, after being provided with all necessary information regarding a treatment option, chooses not to proceed with it. This respects the patient's autonomy and right to make decisions about their own healthcare.
What is the function of sodium meta bisulfite in a local anesthetic solution?
1) It acts as a vasoconstrictor.
2) It acts as an antiseptic.
3) It prevents oxidation of the anesthetic agent.
4) It reduces the acidity of the solution.
ADC Test Answer: 3
Sodium meta bisulfite is a reducing agent that helps maintain the potency of the local anesthetic by preventing its oxidation during storage.
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.
The largest resting membrane potential is observed in 1. skeletal muscle 2. smooth muscle 3. equal in both 4. -120 mv in resting smooth muscle
Anatomy Answer: 1The largest resting membrane potential is observed in skeletal muscles
At which angle should the external surface of proximal cavity walls in a Class II preparation for amalgam be finished?
1) An acute angle
2) An obtuse angle
3) A right angle
4) An angle of 45°
An obtuse angle is preferred for amalgam preparations to enhance the retention and resistance form of the restoration.
Most potent inhaled anaesthetic is:
1) Halothane
2) Isoflurane
3) Sevoflurane
4) Desflurane
Halothane is the most potent inhalational agent with a MAC of 0.74%.
What is the effect on local anesthetic when used with sodium bicarbonate?
1) Increases speed and quality of anaesthesia
2) Decreases diffusion of the anaesthetic drug
3) Causes rapid elimination of the local anaesthetic
4) Decreases speed and quality of anaesthesia
The speed of onset of Anaesthesia is raised by Sodium bicarbonate and further enhances its quality by elevating the intensity and duration of block.
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
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.
A zinc-containing amalgam that has been contaminated by moisture will manifest A. higher setting expansion B. a gross delayed expansion C. reduced compressive strength D. an increase in the amount of gamma phase 1. A and B 2. B and C 3. C 4. C and D
Dental Material Answer: 2A zinc-containing amalgam that has been contaminated by moisture will result in delayed expansion and reduced compressive strength
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.
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.
VLC resins are also called
1) microwave-activated resins.
2) tertiary amine-activated resins.
3) light-activated resins.
4) heat-activated resins.
The first light-activated systems were formulated for UV light to initiate free radicals.
Because of these advantages, visibly light-activated composites are more widely used than are chemically acti wited materials.
In the extended ecological caries hypothesis, what is the primary
factor that influences microbial adaptation and selection in the dental biofilm?
1) The presence of fermentable carbohydrates.
2) Environmental acidification.
3) The host's immune response.
4) The availability of oxygen.
The extended ecological caries hypothesis posits that acidic environments created by dietary sugars and acids are the main drivers for microbial adaptation and selection in the dental biofilm, particularly favoring the growth of aciduric and acidogenic bacteria like mutans streptococci.
The most appropriate management for a child with a primary tooth that caused a
severe, throbbing toothache the previous night is to
1) prescribe an analgesics.
2) perform a pulpectomy
3) remove caries and place a temporary restoration.
4) perform a pulpotomy.
Pulpectomy removes necrotic or infected pulp tissue, resolving pain while preserving the tooth's functionality.
In a maxillofacial fracture, if intracranial pressure increases:
1) It is normal
2) Typically associated with tachycardia
3) Associated with blood pressure
4) Usually subsides spontaneously
ADC Test Answer: 3
Increased intracranial pressure can lead to alterations in cerebral blood flow and may cause changes in blood pressure.
The Beta Blocker with local Anesthetic effect is
1) Pindolol
2) Atenolol
3) Esmorolol
4) Timolol
Local anesthetic action, also known as "membrane-stabilizing" action, is a prominent effect of several -blockers Acebutolol, Labetalol, Pindolol Propranolol.
This action is the result of typical local anesthetic blockade of sodium channels and can be demonstrated experimentally in isolated neurons, heart muscle, and skeletal muscle membrane.
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 a potential complication of dental anesthesia?
1) Nerve damage
2) Hematoma formation
3) Infection
4) All of the above
Dental anesthesia can lead to complications such as nerve damage, hematoma formation, and infection at the injection site.
The point at which a stress of a material exhibits a specific limited deviation P Is called
1) Proportional limit
2) Tensile strength
3) Ultimate strength
4) Yield strength
Yield strength is the stress required to produce plastic deformation.
Which of the following is an example of a chemical hazard in a dental office? 1) Repetitive motion injuries 2) Exposure to dental amalgam 3) Loud noises from dental equipment 4) Inadequate lighting
Occupational Hazards Answer: 2Chemical hazards in dentistry include exposure to materials such as dental amalgam, which contains mercury, and other chemicals used in dental procedures.
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.
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.
What is the primary goal of a dentist when treating a patient with a history of abuse or neglect?
1) To provide comprehensive dental care
2) To determine the cause of the patient's injuries
3) To provide psychological support and referrals
4) To gather evidence for legal proceedings
The primary goal of a dentist is to provide the best possible dental treatment to their patients, while also being sensitive to their history.
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.
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 first teeth to erupt in the dental arches of the human being are the, primary 1. mandibular cuspids 2. maxillary central incisors. 3. mandibular central incisors 4. maxillary first molars
Dental Anatomy Answer: 3The first teeth to erupt in the dental arches of the human being are the, primary mandibular central incisors
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.
Paraesthesia in the distribution of the inferior alveolar nerve, including the lower lip, strongly suggests a mandibular fracture. This is often due to trauma to the inferior alveolar nerve.
What is the legal status of informed consent in an emergency situation?
1) It is not required
2) It is always required
3) It is required unless the patient is unconscious
4) It is required unless the treatment is lifesaving
In an emergency where immediate treatment is necessary to save a patient's life or prevent serious harm, informed consent is not required due to the urgent nature of the situation.
Which tooth is most commonly associated with dental impaction?
1) Maxillary canine
2) Mandibular first molar
3) Mandibular third molar
4) Maxillary central incisor
The mandibular third molar (wisdom tooth) is the most frequently impacted tooth due to limited space in the dental arch.
Baker anchorage utilizes
1) Intermaxillary anchorage with screws
2) Intramaxillary anchorage with screws
3) Intermaxillary anchorage with elastics
4) Intramaxillary anchorage with elastics
SOLUTION Intermaxillary anchorage or Baker's Anchorage.
Intramaxillary anchorage is also used in the form of E-chain, when elastics are used from the back molar teeth to the front teeth in the same jaw to move teeth back of the mouth.
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.
Local anaesthetic agent which has antimuscarinic action on heart muscle receptors is:
1) Procaine
2) Cocaine
3) Chloroprocaine
4) None of the above
Cocaine is a sympathomimetic (and thus antimuscarinic) local anaesthetic and thus adrenaline should not be added to it.
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.
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 is the importance of confidentiality in dental records management?
1) It allows for open communication between dentist and patient
2) It protects the dentist from legal issues
3) It ensures that financial information is secure
4) It is not important
Confidentiality fosters trust and encourages patients to share sensitive information, which is crucial for effective treatment.
A 6 year old child has a non-vital primary mandibular second molar which has a
draining sinus tract from he bifurcation area The most appropriate management
is
1) extraction.
2) observation.
3) pulpotomy.
4) direct pulp capping.
Which nerve fibers are responsible for pulpal pain?
1) A-alpha fibers
2) A-beta fibers
3) Delta fibers
4) C fibers
Delta fibers are responsible for sharp, stabbing pain associated with pulpal pain, while C fibers transmit dull, aching pain.
What is the legal obligation of a dentist when they suspect a patient is a victim of abuse or neglect?
1) To report the suspicion to the authorities immediately
2) To advise the patient to report the abuse themselves
3) To maintain confidentiality and not take any action
4) To conduct a thorough investigation before reporting
Dentists are mandated reporters and must report any suspicion of abuse or neglect to the appropriate authorities immediately.
A dentist observes that an elderly patient has poor oral hygiene and appears to be wearing the same clothes for several days. What is the most appropriate action?
1) Offer to clean the patient’s teeth for free
2) Discuss the situation with the patient’s family
3) Report suspected neglect to adult protective services
4) Ignore the signs if the patient is independent
The dentist should report any signs of neglect to ensure the patient receives the necessary care and assistance.
What is the term for an irrational fear of dental procedures?
1) Odontophobia
2) Gag reflex
3) Hypochondria
4) Agoraphobia
Odontophobia is a specific phobia characterized by fear of dental procedures or the dental environment.
Basal cell carcinoma is characterized by:
1) Rapid growth and metastasis
2) Local cutaneous invasion
3) Inability to invade bone
4) Poor prognosis
ADC Test Answer: 2
Basal cell carcinoma typically exhibits local invasion but rarely metastasizes, making it generally treatable with a good prognosis.
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.
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.
Lignocaine can be used in all, except:
1) Ventricular fibrillation
2) Spinal anaesthesia
3) Epidural
4) Convulsions
Lignocaine rather in toxic doses can produce convulsion.
IN HEALTH EDUCATION PROGRAMME a group of 10 ppl r planning to speak on a topic of common interest. Which is the best ed. Approach
1.panel discussion
2.symposium
3.group discussion
4.workshop
Group discussion because participants get chances to express thier views Idea panel discussion : 4-8 people talk abt a topic in front of large group. symposium:series of speeches on a selected subject, no discussion. group discussion :considered a very effective method of health edu if the group consists of not less than 6 and not more than 20 persons. workshop:usually lasts for few days wher people get together and work in different groups and discuss problem of concern it can be called a problem solving method.
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.
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).
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.
Technique of anesthesia in which local anesthetic solution is injected into the vein is?
1) Epidural anesthesia
2) Intra venous regional anesthesia
3) Nerve block
4) Infiltration anesthesia
Intra venous regional anesthesia is the technique of anesthesia in which a local anesthetic solution is injected into the vein.
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.
The alpha-1 function post-synaptically at the neuromuscular junction
is responsible for:
1) Smooth muscle contraction
2) Skeletal muscle contraction
3) Cardiac muscle contraction
4) Inhibition of muscle contraction
Alpha-1 receptors mediate the contraction of skeletal muscles.
What information is included in a dental chart?
1) Patient's name and contact details
2) A visual representation of the patient's teeth and their conditions
3) Treatment notes and plans
4) All of the above
A dental chart is a graphic representation of a patient's mouth that includes all teeth, their conditions, restorations, and any other relevant oral information.
Which of the following areas cannot be determined by survey analysis of a partially edentulous cast?
1) Areas to be blocked out for framework
2) Areas shaped for clasp retention
3) Areas used for guideline planes
4) Depth of rest seats
ADC Test Answer: 4
Survey analysis assists in determining areas suitable for clasp retention, framework design, and guiding planes, but it cannot measure the depth of rest seats directly.
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 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.
Guiding planes on abutment teeth for a removable partial denture should be
prepared before the occlusal rests are prepared in order to
1) avoid post-insertion adjustment.
2) facilitate surveying of the cast.
3) improve the retention of the direct retainer assembly.
4) finalize the location of the occlusal rest.
Guiding planes are critical for establishing the path of insertion for a
removable partial denture (RPD).
If guiding planes are not prepared first, occlusal rests may be positioned
inappropriately, leading to misalignment.
Preparing guiding planes first ensures that all components of the RPD fit
properly and function as intended
Which one of the following is true about oral hairy leukoplakia?
1) Associated with HIV virus infection and is commonly seen on the dorsal of the tongue
2) Associated with HIV virus infection and is commonly seen on the lateral side of the tongue
3) Usually caused by Candida species
4) Always associated with trauma to the lateral side of the tongue
ADC Test Answer: 2
Oral hairy leukoplakia is typically associated with Epstein-Barr virus and is most commonly found on the lateral borders of the tongue in immunocompromised individuals.
Is measles caused by an RNA or DNA virus?
1) RNA virus
2) DNA virus
3) Both
4) Neither
Measles is caused by a single-stranded RNA virus, specifically the measles virus.
What is the most common type of periodontal charting? 1) Probing depths 2) Gingival recession 3) Tooth mobility 4) Furcation involvement
Dental Records Answer: 1Probing depths are the most commonly recorded periodontal charting measurement. They indicate the distance from the free gingival margin to the bottom of the periodontal pocket and are crucial in assessing the health of the periodontium.
Which of the following is not true about casting gypsum-bonded investment material?
1) Its used for cast metal alloys
2) 50—65% of gypsum changes to form α-hemihydrate
3) The investment material is not heated above 700°C temperature
4) Heating above 700°C causes formation of sulphur dioxide from copper sulphate
Gypsum-bonded investments are used for gold alloys.
Ist investments flow contain the α-hemihydrate of gypsum. because greater strength is obtained. This gypsum
product serves as a binder to hold other ingredients together and provide rigidity. The strength of the investment is dependent on the amount of binder present.
A slight expansion takes place between 400°C and approximately 700°C (1292°F). and then a large contraction occurs. This later shrinkage is most likely caused by decomposition and release of sulphur gases, such as sulphur dioxide.
This decomposition not only causes shrinkage but also contaminates the casting with the sulphides of the nonnohlc alloying elements, such as silver and copper. Thus, it is imperative that gypsum investments should not be heated above 700°C (1292°F). however, for gypsum products containing carbon, the maximum temperature should be 650°C (1202°F). In this way, proper ut and uncontaminated alloys are obtained.
The main advantage of osteogenesis distraction is:
1) Increased risk of relapse
2) Large movements with less relapse
3) Shorter treatment time
4) Less pain during the procedure
Osteogenesis distraction is a surgical technique used to gradually lengthen bones. One of its primary advantages is that it allows for substantial bone movements with a reduced risk of relapse compared to other methods. By applying a controlled force over a period, the bone is stretched and new bone forms in the distraction gap, leading to a stable and predictable outcome. The process is generally well-tolerated, with pain managed through medication and adjustments to the distraction device.
Internal resorption is:
1) Radiolucency over unaltered canal
2) Usually in response to trauma
3) Radiopacity over unaltered canal
4) Associated with carious lesions
ADC Test Answer: 2
Internal resorption occurs due to trauma or other factors that stimulate the pulp, leading to resorption of the dentin from within, resulting in a characteristic appearance.
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.
Which of the following is a sign of child abuse that a dentist might observe during a routine examination?
1) Frequent, unexplained oral injuries
2) Reluctance to speak openly about home life
3) Presence of dental caries
4) Fear of the dentist
Frequent, unexplained oral injuries such as fractured teeth or lacerations can be indicative of child abuse.
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 is the recommended retention period for dental records?
1) Indefinitely
2) Until the patient turns 18
3) For a certain period after the last treatment
4) Only as long as the patient is a current client
While specific retention periods may vary, dental records should generally be kept for a defined time after the last treatment to comply with legal and professional standards.
Proton pump inhibitors are most effective when they are given
1) After meals
2) Shortly before meals
3) Along with H2 blockers
4) During prolonged fasting periods
Bio-availability of all proton pump inhibitors is reduced by food; they should be taken in empty stomach, followed 1 hour later by a meal to activate H+K+ ATPase and make it more susceptible to the proton pump inhibitor.
Which maxillary tooth is most prone to fracture during extraction?
1) Maxillary first molar
2) Maxillary first premolar
3) Maxillary canine
4) Maxillary second premolar
Maxillary second premolars are more likely to fracture due to their two curved and divergent roots.
Who checks if there is a written protocol for radiation protection in the clinic?
1) The dentist
2) The radiation protection supervisor
3) The clinic manager
4) The health and safety officer
The radiation protection supervisor is responsible for ensuring that protocols are in place and adhered to for the safety of both patients and staff.
A positive and prolonged reaction to a heat stimulus indicates that the pulp is
1) necrotic
2) in an early hyperemic state.
3) normal.
4) irreversibly damaged
A positive and prolonged reaction to a heat stimulus typically indicates that the pulp is irreversibly damaged. This prolonged response suggests that the nerve fibers are still responding to the stimulus, but the damage is significant enough that the pulp is not capable of healing, indicating a need for endodontic treatment.
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.
What is the modified Keyes-Jordan model of caries development?
1) A model that describes caries as a linear process of demineralization and
remineralization.
2) A model that emphasizes the role of sugar and bacteria in caries development.
3) A model that incorporates various modifying factors affecting caries
development.
4) A model that describes caries as solely a dietary issue.
The modified Keyes-Jordan model takes into account the multifactorial nature of caries, including host factors, microbial factors, and environmental factors.
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 cellularity of exocrine glands?
1) Multicellular
2) Unicellular
3) Both multicellular and unicellular
4) None of the above
Most exocrine glands in the human body are multicellular, with the exception of unicellular glands like goblet cells.
What is the best way to communicate with an anxious patient during a dental procedure?
1) Speak in a loud, firm voice
2) Use technical dental terms
3) Speak in a calm, gentle, and reassuring manner
4) Avoid eye contact
Communicating with a calm and gentle tone helps to reduce the patient's anxiety and maintains trust in the dental professional.
The retention pin in an amalgam restoration should be placed:
1) Parallel to the outer wall
2) Parallel to the long axis of the tooth
3) Perpendicular to the occlusal plane
4) Diagonal to the preparation
ADC Test Answer: 1
When placing a retention pin in an amalgam restoration, it should be oriented parallel to the outer walls for optimal retention and to avoid weakening the tooth structure.
Which of the following is a non-preferable characteristic for an abutment
tooth root shape?
1) Broad and divergent roots
2) Round and fused roots
3) Single and conical roots
4) All of the above
While not explicitly mentioned as non-preferable, round and fused roots are not listed among the preferred characteristics for abutment teeth. Broad and divergent roots are considered desirable.
Activation of muscle contraction is promoted by : Opening of the sarcoplasmic reticulum Ca channel. Ca2+ binding to troponin C. Opening of Na channels Ca2+ binding to the Ca2+-ATPase
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 best treatment for peg-shaped laterals?
1) Composite filling
2) Hybrid composite or laminate veneer
3) Dental crown
4) Orthodontic treatment
A laminate veneer or hybrid composite is often the best aesthetic solution for peg-shaped laterals, improving their appearance.
Fusion Temperature of Impression Compound should occur: 1. Before mouth temperature 2.. At skin temperature 3. Ahove mouth temperature 4. At room temperature
Dental Material Answer: 3Fusion Temperature of Impression Compound should occur above mouth temperature
Which of the following cannot be used to slow down the setting of zinc oxide eugenol impression paste? 1. cooling mixing slab 2. adding a small amount of water 3. adding a small amount of glycerine 4. altering the amounts of the two pastes used
Dental Material Answer: 2a small amount of water acccelerates the setting of zinc oxide eugenol impression paste
What is the characteristic radiographic feature of distoangular impaction?
1) The tooth is horizontally positioned
2) The tooth is tilted towards the ramus
3) The tooth is tilted towards the tongue
4) The tooth is completely embedded in the bone
Distoangular impaction occurs when the tooth is tilted towards the ascending ramus of the mandible, making it challenging to remove due to the need for significant bone removal.
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
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.
Dens in dente is thought to arise as a result of 1. a normal tooth but enclaved within an other tooth, during formation 2. proliferation and evagination of an area of the inner enamel epithelium 3. extensive growth of mesenchymal cells of pulp tissue 4. an invagination of the enamel organ during tooth formation
Oral Pathology Answer: 4Dens in dente is an invagination of the enamel organ during tooth formation
What should be included in a patient's medical history in dental records?
1) Patient's favorite food
2) List of systemic diseases and medications
3) Patient's hobbies
4) Financial status
A thorough medical history should include relevant health information that can impact dental treatment.
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.
Which of the following Antimicrobials has Antipseudomonal action:
1) Cefopodoxime proxetil
2) Ceforanide
3) Cefotetan
4) Cefoperazone
Cephalosporins with antipseudomonal action:
Cefoperazone Ceftazidime
What is the recommended approach to treat a patient with severe dental phobia?
1) Immediate comprehensive treatment
2) Gradual exposure to dental procedures
3) Immediate surgery under general anesthesia
4) Avoiding dental treatment altogether
Gradual exposure through a process like systematic desensitization can help patients with severe dental phobia to build tolerance and overcome their fears.
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.
A vitamin B12 deficiency may affect heme synthesis by reducing the concentration of which of the following? Choose the one best answer.
1) Acetyl-CoA
2) Succinyl-CoA
3) Glycine
4) Alanine
Vitamin B12 participates in two reactions in the body-conversion of homocysteine to methionine and conversion ofmethylmalonyl-CoA to succinyl-CoA. Methylmalonyl-CoA is produced via various amino acid degradation pathways, and from oddcarbon chain fatty acid oxidation.
Glycine is usually obtained from the diet, although in a B12 deficiency a functional folate deficiency may also develop, leading to an inhibition of serine hydroxymethyltransferase, the enzyme that converts serine to glycine, and requires free tetrahydrofolate.
Succinyl-CoA and glycine are the precursors for heme synthesis. A B12 deficiency would not inhibit the production of acetyl-CoA, succinate, or alanine.
A 5 yr old pt is sheduled FOR tonsilectomy. On the day of Surgery he has running nose , temp= 37.5 degrees and dry cough. which of the following will b the most apt decision 4 Surgery
1. Surgery shud b cancelled
2. can proceed if chest is clesr n no h/o asthma
3. shud get chest x-ray done b4 proceeding 4 Surgery
4. cancel Surgery for 3 weeks n pt to b on antibiotics
general anesthesia,specifically nitrous oxide is contraindicated if the child is running a common cold and having slight fever on the day of surgery
A child presents with multiple bruises in various stages of healing. What should the healthcare provider do first?
1) Ask the child how they got the bruises
2) Report the findings to child protective services
3) Document the injuries and schedule a follow-up
4) Contact the parents for an explanation
When a child presents with signs of potential abuse, the healthcare provider should report the findings to child protective services immediately.
Lateral canals are commonly found:
1) In the middle third of the root
2) In the apical third of the root
3) Near the crown
4) Throughout the entire root
ADC Test Answer: 2
Lateral canals are typically located in the apical third of the root and provide pathways for communication between the pulp and periodontal structures.
The function of 2% potassium sulphate in a gypsum product is
1) to regulate the setting expansion.
2) to regulate the setting time.
3) to act as a retarder.
4) none of the above.
Sodium chloride is an accelerator up to about 2% of the hemihydrates, but at a higher concentration, it acts as a retarder. Sodium sulphate has its maximum acceleration effect at approximately 3.4%; at greater concentrations, it becomes a retarder.
The most commonly used accelerator is potassium sulphate.
particles act as nuclei of crystallization.
Citrates. acetates and borates generally retard the reaction.
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.
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.
A persistent oroantral fistula for a 12-week period following the extraction of a maxillary first permanent molar is best treated by:
1) Further review and reassurance since it will most probably heal spontaneously
2) Antibiotic therapy and nasal decongestants
3) Curettage and dressing of the defect
4) Excision of the fistula and surgical closure
ADC Test Answer: 4
Surgical closure is the most effective treatment for a persistent oroantral fistula, especially after 12 weeks, as spontaneous healing is unlikely.
Which of the following is the most important factor in disease progression in smokers?
1) Smokers have drier mouths than non-smokers
2) Smokers have poorer oral hygiene than non-smokers
3) Nicotine will impair the chemotactic and phagocytic properties of PMNs
4) The gingival blood flow is reduced in smokers
Reduced gingival blood flow in smokers contributes significantly to the progression of periodontal disease and other oral health issues.
Developed hypo reactivity to a drug is
1) Detoxification
2) Antagonism
3) Tolerance
4) Desensitization
Tolerance: The capacity to absorb a drug continuously or in large doses without adverse effect; diminution in the response to a drug after prolonged use.
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.
You wish to purchase a dental X-ray machine and have the choice between 60kVp and 70kVp machines. With a single change from 60kVp to 70kVp, what would the approximate effect on exposure time be?
1) No effect
2) Half the time
3) Double
4) Quarter
ADC Test Answer: 2
Increasing the kilovoltage (kVp) increases the energy of the x-rays, which increases the penetrating power and film blackening.
Which material is more hydrophilic: PVS or polyether?
1) PVS
2) Polyether
3) Both are equally hydrophilic
4) Neither is hydrophilic
Polyether is generally considered more hydrophilic compared to PVS (polyvinyl siloxane). Hydrophilic materials, like polyether, readily absorb water or are soluble in water, which can be advantageous in certain dental applications, such as improving the quality of impressions in moist environments or enhancing the bond between the material and the oral tissues. PVS, on the other hand, is a type of elastomeric impression material that is less hydrophilic but more accurate and easier to handle.
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).
What is the term for the process of cleaning, disinfecting, and sterilizing
reusable dental handpieces?
1) Decontamination
2) Sterilization
3) Reprocessing
4) Disinfection
Reprocessing refers to the steps taken to prepare reusable dental
handpieces for safe use on another patient, including cleaning, disinfection,
and sterilization.
Following drug interact with cefotaxime?
1) Digoxin
2) Paracetamol
3) Loop diuretics
4) Nifedipine
Nephrotoxicity of cephalosporins is accentuated by concurrent administration of loop diuretics.
Platelets play an important role in hemostasis; which of the following describes this role?
1) They convert fibrinogen to fibrin
2) They agglutinate and plug small, ruptured vessels
3) They initiate fibrinolysis in thrombosis
4) They supply fibrin stabilizing factors
ADC Test Answer: 2
Platelets are crucial for forming a plug at the site of vessel injury, which is a key step in the hemostatic process.
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.
What does T2 indicate in the TNM classification?
1) Tumor size less than 2 cm
2) Tumor size between 2-4 cm
3) Tumor size greater than 4 cm
4) Tumor extending to adjacent structures
T2 indicates that the tumor measures between 2 and 4 cm in its greatest dimension, which is important for staging cancer.
Lip cancer survival rates are generally:
1) Higher in black males
2) Higher in white females
3) Higher in Hispanic males
4) Higher in Asian females
Lip cancer survival rates are influenced by various factors, including the stage of the cancer at diagnosis, the individual's health, and the effectiveness of treatment. Although the question implies that white females have the highest survival rates, it's essential to note that survival rates can be different across different populations. Early detection and treatment are crucial for improving outcomes in lip cancer, regardless of ethnicity.
The fovea palatini serves as a landmark for determining:
1) Anterior border of upper denture
2) Posterior border of upper denture
3) Midline of the arch
4) Occlusal plane angle
ADC Test Answer: 2
The fovea palatini marks the posterior seal area of the upper denture, essential for denture retention.
What oral condition is characterized by inflammation of the oral mucosa and is
common in elderly patients?
1) Angular cheilitis
2) Oral lichen planus
3) Stomatitis
4) Oral thrush
Stomatitis is a general term for inflammation of the oral tissues,
which can be more common in older individuals due to various factors, including
dry mouth and nutritional deficiencies.
What type of caries is characterized by a rapid progression and is often light-colored?
1) Chronic caries
2) Arrested caries
3) Acute/rampant caries
4) Incipient caries
Acute/rampant caries are immediately damaging, light-colored, and very infectious.
The cricothyroid artery is a branch of the 1. occipital artery 2. superior thyroid artery 3. facial artery 4. superficial temporal artery
Anatomy Answer: 2The cricothyroid artery is a branch of the superior thyroid artery
Which of the following is a psychologically acceptable method for bone removal during an extraction?
1) High-speed handpiece and bur technique
2) Chisel and mallet technique
3) Laser surgery
4) All of the above
The high-speed handpiece and bur technique is generally more accepted by patients due to its precision and controlled removal of bone.
In Angle’s class III malocclusion, mandibular anterior teeth will be
1) Proclined
2) Retroclined
3) Inclined
4) Any of the above
SOLUTION The reason is found in the concept of "dental compensation for skeletal discrepancy. This can occur naturally as well as being created by orthodontic camouflage treatment. In mandibular prognathism, for instance, as the individual grows the upper incisors tend to protrude while the lower incisors incline lingually. By the time growth is completed, the dental discrepancy usually is smaller than the jaw discrepancy. Tooth position has compensated at least partially for the jaw discrepancy.
What should be done with dental records at the end of each day?
1) Leave them open on the desk
2) Compress, close, and lock them securely
3) Dispose of any unnecessary records
4) Hand them over to the receptionist
To maintain security and confidentiality, dental records should be properly stored and locked at the end of each day.
Which of the following is a sign of neglect in a dental patient?
1) A patient with a full set of dentures
2) A child with untreated dental decay and poor nutrition
3) A patient who regularly attends dental appointments
4) A patient who is anxious about dental procedures
Untreated dental decay and poor nutrition can indicate neglect, especially in children who rely on caregivers for proper care.
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.
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
A medication that reduces the rate of aqueous humor formation in acute glaucoma
1) phenothiazines
2) amphotericin B
3) Isoniazid
4) carbonic anhydrase inhibitors
Carbonic anhydrase is found in erythrocytes, kidney, gut, ciliary body, choroid plexus, and glial cells.
Carbonic anhydrase inhibitors are used primarily as probes for studying renal transport mechanisms and in the treatment of glaucoma
When used to treat glaucoma, carbonic anhydrase inhibitors diminish the transport of HCO3 - and Na+ by the ciliary process, which limits intraocular pressure.
This reduces the formation of aqueous humor by up to 50%, thereby reducing the intraocular pressure.
The two major local causes of root resorption are
1) inflammation and excessive pressure
2) inflammation and cementoclast-activating factor
3) excessive pressure and increased pH of ground substance
4) cementoclast-activating factor and increased pH of ground substance
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.
What is the correct order for removing PPE after treating a patient?
1) Gloves, mask, gown
2) Gown, gloves, mask
3) Mask, gown, gloves
4) Gloves, gown, mask
The correct order for removing PPE is to first remove and dispose
of the gloves, then the gown, and finally the mask to prevent contact with
potentially contaminated surfaces.
What is the sequence from superficial to deepest in dentine caries?
1) Zone of bacterial penetration, demineralisation, sclerosis, reparative dentine
2) Zone of bacterial penetration, reparative dentine, demineralisation, sclerosis
3) Zone of bacterial penetration, sclerosis, reparative dentine, demineralisation
ADC Test Answer: 1
In dentine caries progression, the zones typically follow this order, reflecting the advancing infection and the tooth's reparative attempts.
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.
Recurrent unilateral submandibular swelling and pain just prior to meals is
indicative of
1) an odontogenic infection.
2) sialolithiasis.
3) ranul1)a
4) sarcoidosis.
E. Sjögren’s syndrome.
Salivary stones block ducts, causing pain and swelling when saliva production
increases, such as during meals.
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.
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.
A reversible white spot lesion indicates early demineralization that can be reversed with proper care and management
What is the difference between a dental implant and a dental bridge?
1) A dental implant is a fixed restoration that replaces the root and crown of a tooth, while a bridge is a fixed restoration that uses adjacent teeth as supports.
2) A dental implant is a removable restoration, while a bridge is fixed.
3) A dental bridge is a single piece that replaces the root and crown, whereas an implant requires multiple components.
4) Both implants and bridges are used to replace single missing teeth only.
ADC Test Answer: 1
A dental implant is a titanium post that is surgically placed in the jawbone to mimic a tooth root and support a prosthetic crown.
If the drug is taken while teeth are still in the enamel developmental stage, it
can produce hypoplasia and intrinsic staining. What is the drug that's being
referred to?
1) Amino glycosides
2) Tetracycline
3) Amoxicillin
4) Levaquin
Tetracycline is the drug being referred to in this question. When taken during
the enamel developmental stage of teeth, it can cause hypoplasia and intrinsic
staining. This means that the drug can affect the growth and development of the
enamel, leading to underdevelopment (hypoplasia) and discoloration (intrinsic
staining) of the teeth.
What must a healthcare professional do to ensure informed consent is valid?
1) Provide all possible treatment options
2) Guarantee the success of the proposed treatment
3) Ensure the patient has capacity and understanding
4) All of the above
For informed consent to be valid, the patient must be capable of
understanding the information provided and have the capacity to make a decision.
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 primary function of the tensor tympani muscle?
1) To assist in swallowing
2) To dampen loud sounds
3) To facilitate hearing
4) To stabilize the jaw
The tensor tympani muscle helps protect the inner ear from loud sounds by tensing the tympanic membrane, reducing sound transmission.
What is the significance of erosive lichen planus?
1) High malignant potential
2) Some malignant potential
3) No malignant potential
4) Always requires surgical intervention
ADC Test Answer: 2
Erosive lichen planus can carry an increased risk for malignant transformation, but this potential varies among individuals.
What is the primary purpose of informed consent in healthcare?
1) To protect
the healthcare provider from legal liability
2) To ensure the patient understands the treatment options
3) To expedite the treatment process
4) To document the patient's medical history
Informed consent is primarily about ensuring that patients understand the nature of the treatment, its risks and benefits, and alternatives, allowing them to make an informed decision.
What should be done with consent forms in dental records?
1) They should be discarded after treatment
2) They should be signed and stored securely
3) They should be kept in a separate financial record
4) They do not need to be documented
Consent forms must be properly signed and retained as part of the patient's clinical record to ensure legal compliance.
In designing a partial denture, what is the first step?
1) Outline saddles
2) Surveying
3) Plan supports
4) Obtain retention
Surveying helps determine the best path of insertion and identifies any undercuts, which is important for subsequent design steps to ensure proper retention and esthetics.
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.
Addition of carbon is contraindicated in which of the following investment materials :
1) Gypsum bonded
2) Silica bonded
3) Phosphate bonded
4) All
Occurence of carbon contamination from investment can easily be observed in case casting temp.
Such contamination embrittles the alloy.
An unstable membrane potential that will spontaneously depolarize is a property of which type of muscle? 1. Cardiac only 2. Cardiac and smooth 3. Skeletal and smooth 4. Skeletal and cardiac
Physiology Answer: 2An unstable membrane potential that will spontaneously depolarize is a property of Cardiac and smooth muscles
The principal growth sites of the maxilla in a downward and forward direction include which of the following sutures?
1 Frontomaxillary.
2) Zygomaticomaxillary.
3) Pterygopalatine.
4) Median palatine.
1). (1), (2), and (3).
2). (1) and (3).
3). (2) and (4).
4). (4) only.
Growth of the maxilla occurs at multiple sutures, particularly the frontomaxillary, zygomaticomaxillary, and pterygopalatine, allowing for its expansion and forward displacement.
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.
Before restoring a tooth with composite, the area is etched. Accidental contamination occurs with saliva, Therefore
1) the area is re-etched before restoration
2) the area is air-dried using an air spray and continue with restoring
3) wipe the saliva with cotton and continue to restore.
4) add excess composie material and cure it
Etching of tooth surface with 37% phosphoric acid creates microporosities in the enamel and dentin.
After etching the surface energy of the enamel will increase. This will make it very sticky to any kind of contaminants. If salivary contamination will occur, the salivary proteins will precipitate in the microporosities. This will prevent the adequate penetration of the bonding agent, therby reducing the micotag formation. Hence, complete isolation is essential.
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.
Which of the following is used to decrease the toxicity of amphotericin B?
1) Dose reduction
2) Liposomal delivery systems
3) Supplementing glucose
4) Giving it along with flucytosine
Liposomal delivery systems decrease the amount of free drug in the blood Infected cells interact with the liposomes, resulting in the release of amphotericin B at the site of action.
What should be done if a patient refuses a recommended treatment plan?
1) Ignore the refusal
2) Document the refusal in the dental record
3) Force the treatment
4) Refer the patient to another dentist
It is essential to document a patient's refusal to accept treatment to maintain accurate records and protect against potential legal issues.
During setting, a gypsum-bonded investment material will undergo an additional
expansion if it occurs
1) under water.
2) under vacuum.
3) in a cold environment.
4) in a dry environment.
Hygroscopic expansion occurs when water surrounds the setting gypsum, enhancing
its dimensional changes.
This type of expansion is often utilized intentionally in casting to compensate
for metal shrinkage during cooling.
Which type of radiograph is particularly useful for evaluating the temporomandibular joint (TMJ)?
1) Panoramic radiograph
2) Periapical radiograph
3) Occlusal radiograph
4) Cone beam computed tomography (CBCT)
CBCT provides detailed 3D images of the TMJ, allowing for accurate assessment of its structure and potential pathology.
Which immunoglobulin is responsible for providing passive immunity from the mother to the fetus?
1) IgA
2) IgM
3) IgD
4) IgG
IgG is the immunoglobulin that crosses the placenta and provides passive immunity to the fetus, offering protection against infections during the early stages of life.
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.
Epinephrine causes increased blood glucose level due to: 1. Increased glycogenolysis in liver and muscle 2. Activation of phosphorylase 3. Inhibition of glycogen synthesis in liver
Which of the sugar is least cariogenic:
1) Sucrose
2)
Glucosebr
3)
Xylitol
4)
Lactose
Xylitol is the least cariogenic sugar because it cannot be metabolized by the bacteria in the mouth, unlike glucose, sucrose, and lactose. This means that xylitol does not contribute to tooth decay as much as the other sugars do.
The principal role of Vitamin E in the prevention of oxidative damage is to potentiate the action of superoxide dismutase
How often should dental records be updated?
- Annually
- With each appointment
- Only when there is a change in treatment plan
- It depends on the patient's dental insurance
Dental records should be updated at every appointment to reflect the most current information regarding the patient's oral health and treatments.
The presence of schistocytes in a blood smear is indicative of what condition?
1) DIC
2) Thrombocytosis
3) Genetic clotting disorder
4) Stable hemoglobinopathy
Schistocytes, or fragmented red blood cells, are often observed in patients with disseminated intravascular coagulation (DIC) and indicate mechanical hemolysis.
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.
Common cause of allergy in orthodontics:
1) Composite resin.
2) Vinyl.
3) Nickel.
4) Acrylic.
ADC Test Answer: 3
Nickel is a common allergen found in many orthodontic appliances, particularly in metal brackets or wires.
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
Rejecting, negative inquiry, and fogging, are all responses for which type of
criticism.
1) Postive criticism.
2) Destructive criticism.
3) False criticism.
4) Constructive criticism.
Rejecting, negative inquiry, and fogging are all responses that are typically
associated with destructive criticism. Destructive criticism refers to feedback
or comments that are unhelpful, hurtful, or aimed at tearing down the person or
their work rather than providing constructive suggestions for improvement. These
responses mentioned in the question indicate a dismissive attitude, a negative
questioning approach, and an attempt to obscure or evade the issue, all of which
are characteristic of destructive criticism.
What should a dental practitioner do if a patient’s blood pressure is 185/115 mmHg? 1) Proceed with all treatments 2) Defer elective treatments, provide only emergency care 3) Treat as normal with local anesthesia 4) Administer sedative and treat immediately
Pathology and Medicine Answer: 2Blood pressure readings ?180/110 mmHg require deferral of elective treatments, focusing only on emergency care.
A periapical radiograph can be used to locate the buccal bone level.
1) (1) (2) (3)
2) (1) and (3)
3) (2) and (4)
4) (4) only
What is the suitable restoration approach for a Class III jaw relationship with limited coronal height?
1) Provide a gold onlay
2) Provide a full crown
3) Increase vertical dimension
4) Crown lengthening
An adhesively retained gold onlay is ideal for teeth with limited coronal height due to its ability to conserve tooth structure while providing durability.
Which of the following shows highest permanent deformation following strain in compression :
1) Polysulphide impression material
2) Polyether impression material
3) Condensation silicones
4) Addition silicones
For permanent deformation following strain in compression, ranking is mentioned below: Polysulfide > polyethers > condensation silicone > addition silicone
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.
In the mandible, the main growth site is in the:
1) Gonial angle.
2) Condylar cartilage.
3) Posterior border of the ramus.
4) Inferior and lateral aspects of the body of the mandible.
Orthodontics Answer: 2Excessive overjet is a hallmark of Angle Class II occlusion due to mandibular retrusion or maxillary protrusion, leading to an increased horizontal distance between the arches.
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.
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
The beginning of active eruption of a human tooth occurs 1. before the root has begun to develop 2. coincidental with the beginning of root formation 3. before the root has begun to develop 4. after one half of the root is formed
Dental Anatomy Answer: 4The beginning of active eruption of a human tooth occurs after one half of the root is formed
Serial extraction:
1) Involves the 4 permanent first premolars.
2) Is the treatment for Class II skeletal malocclusions with severe space shortage.
3) Is commenced with bilateral expansion of the arches.
4) Is best suited to Class I dental and skeletal malocclusions with minimal space shortage.
Oral Surgery Answer: 1Serial extraction primarily targets first premolars to address severe space discrepancies, particularly in patients with crowding in Class I dental relationships.
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.
The essential. sulphur containing amino acid is: 1. Methionine 2. Cystetne 3. Cystine 4. Valine
Biochemistry Answer: 1Methionine is sulphur containing AminoAcid
Which of the following is NOT an indication for a pulpotomy?
1) Primary teeth with carious pulpal exposure.
2) Presence of deep pits/fissure.
3) Extensive loss of tooth structure in primary molars.
4) Questionable or confirmed enamel caries.
A pulpotomy is not indicated for questionable or confirmed enamel caries.
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 typical healing time for a simple extraction of a tooth?
1) 3-5 days
2) 1-2 weeks
3) 2-4 weeks
4) 4-6 weeks
Healing after a simple tooth extraction typically occurs within 1 to 2 weeks, although complete healing may take longer.
At what stage of development does the parotid gland form in utero?
1) 20-30 days
2) 30-40 days
3) 40-44 days
4) 50-60 days
The parotid gland begins to develop around 40-44 days in utero, which is approximately 1.5 months.
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 appliance is not suitable for skeletal Class –III malocclusion at the age of 8 years?
1) Frankel III
2) Activator III
3) Chin cap
4) Maxillary splint appliance
SOLUTION Maxillary splint appliance will hold the maxilla and worsen skeletal Cl –III malocclusion.
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.
Most of the pre ganglionic sympathetic fibres are 1 A fibres 2 B fibres 3 C Fibres 4 None of the above
Physiology Answer: 2- A fibres are myelinated fibres having fastest rate of conduction
What is the strength of adrenaline used in dental anesthesia?
1) 1:100
2) 1:1000
3) 1:2000
4) 1:5000
The standard concentration of adrenaline used in dental procedures is 1:1000, which helps to control bleeding and prolong the effect of local anesthetics.
What antibiotic is used to manage a superinfected herpetic lip lesion?
1) Ciprofloxacin
2) Metronidazole
3) Cefuroxime
4) Amoxicillin
Metronidazole is effective against anaerobic bacteria and is often used for superinfected lesions, including herpetic lesions.
Least alteration of cardiovascular status is seen with:
1) Enflurane
2) Isoflurane
3) Methoxyflurane
4) Halothane
The margin of cardiovascular safety is greater with isoflurane than other inhalational agents.
What is the most commonly used topical anesthetic in dentistry?
1) Lidocaine
2) Benzocaine
3) Articaine
4) Procaine
Benzocaine is frequently used as a topical anesthetic in dentistry due to its effectiveness and rapid onset of action.
White coat hypertension refers to: 1) Low blood pressure when seeing a doctor 2) Elevated blood pressure only in a medical setting 3) Consistently high blood pressure at all times 4) Normal blood pressure at all times
Pathology and Medicine Answer: 2White coat hypertension occurs when blood pressure is elevated only in the presence of healthcare workers.