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50 Cards in this Set
- Front
- Back
A patient complains of the discolouration
of an upper central incisor. Radiographically, the pulp chamber and the root canal space are obliterated and the periodontal ligament space appears normal. The most appropriate treatment would be to A. perform root canal treatment and non vital bleaching. B. perform root canal treatment and fabricate a post retained porcelain fused to metal crown. C. perform root canal treatment and fabricate a porcelain veneer. D. fabricate a porcelain fused to metal crown. E. fabricate a porcelain veneer. |
E. fabricate a porcelain veneer.
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Alteration of the intestinal flora by some
chemotherapeutic agents can interfere with reabsorption of a contraceptive steroid thus preventing the recirculation of the drug through the enterohepatic circulation. Which of the following can interfere with this mechanism? 1. Codeine. 2. Penicillin V. 3. Acetaminophen 4. Tetracycline. |
2. Penicillin V.
4. Tetracycline. |
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In an insulin dependent diabetic,
hypoglycemia is characterized by 1. mental confusion. 2. tachycardia. 3. sweating. 4. nausea. |
E. All of the above.
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The principles of closed fracture
management are 1. reduction of fracture. 2. immobilization of fracture. 3. restoration of occlusion. 4. incision and debridement at fracture site. |
1. reduction of fracture.
2. immobilization of fracture. 3. restoration of occlusion. |
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Displacement of fractures is influenced by
1. direction of the blow. 2. muscle attachments. 3. direction of fracture line. 4. hemorrhage. |
1. direction of the blow.
2. muscle attachments. 3. direction of fracture line. |
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Which of the following cells are
characteristic of chronic inflammation of the dental pulp? 1. Plasma cells. 2. Macrophages. 3. Lymphocytes. 4. Neutrophils. |
1. Plasma cells.
2. Macrophages. 3. Lymphocytes. |
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Which of the following anesthetic agents
is/are metabolized by plasma cholinesterase? 1. Prilocaine (Citanest). 2. Lidocaine (Xylocaine). 3. Mepivicaine (Carbocaine). 4. Procaine (Novocain). |
4. Procaine (Novocain).
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In Angle's classification, a Class II,
division 1 malocclusion may describe a combination of skeletal problems, such as 1. maxillary protrusion, normal mandibular position. 2. normal maxillary position, mandibular retrusion. 3. maxillary protrusion, mandibular retrusion. 4. bimaxillary protrusion, with the maxilla more protrusive than the mandible. |
E. All of the above.
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The treatment of an ameloblastoma is
A. chemotherapy. B. enucleation. C. resection. D. radiotherapy. |
C. resection.
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After initiating preventive management for
a 16 year old patient with multiple extensive carious lesions, which of the following restorative treatments is most appropriate? A. Place amalgam restorations over the next few months. B. Excavate caries and place temporary restorations within the next few weeks. C. Delay any treatment until the hygiene improves. D. Restore all teeth with composite resin over the next few months. |
B. Excavate caries and place temporary
restorations within the next few weeks. |
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Lidocaine (Xylocaine)
1. is a local anesthetic agent. 2. has topical anesthetic properties. 3. is an antiarrhythmic agent. 4. has anticonvulsant properties. |
E. All of the above.
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Most anaphylactic reactions to penicillin
occur 1. when the drug is administered parenterally. 2. within minutes after drug administration. 3. in patients who have already experienced an allergic reaction to the drug. 4. in patients with a negative skin test to penicillin allergy. |
1. when the drug is administered
parenterally. 2. within minutes after drug administration. 3. in patients who have already experienced an allergic reaction to the drug. |
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Which of the following clinical conditions
is the most serious? A. Acute periapical abscess of a mandibular central incisor. B. Middle face cellulitis. C. Chronic periapical abscess of a mandibular third molar. D. Infected dentigerous cyst. |
B. Middle face cellulitis.
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Root resorption of permanent teeth may be
associated with 1. excessive orthodontic forces. 2. periapical granuloma. 3. traumatic injury. 4. cementoma. |
1. excessive orthodontic forces.
2. periapical granuloma. 3. traumatic injury. |
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Which of the following are characteristics
of restorative glass ionomer cements? 1. Release of fluoride. 2. Bonding to enamel. 3. Setting is affected by moisture. 4. Irritating to pulpal tissues. |
1. Release of fluoride.
2. Bonding to enamel. 3. Setting is affected by moisture. |
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A retrograde filling is indicated
A. when the apical foramen cannot be sealed by conventional endodontics. B. when a root perforation needs to be sealed. C. when conventional endodontics is impossible due to calcified canals.. D. All of the above. |
D. All of the above.
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For a patient with cardiovascular disease,
local anesthesia A. affects blood pressure more than general anesthesia. B. affects blood pressure less than general anesthesia. C. is responsible for bacteremia. D. None of the above. |
B. affects blood pressure less than
general anesthesia. |
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Vita shade A1
A. is more chromatic than A4. B. has a different hue than A4. C. has higher value than A4 D. has the same translucency as A4. |
C. has higher value than A4
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What ADA type die stone should be used
to pour dies for porcelain fused to metal crowns when a polyvinylsiloxane impression material is used? A. Type IV. B. Type III. C. Type II. D. Type I. |
A. Type IV.
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Xerostomia can be
1. found in the elderly. 2. drug induced. 3. associated with diabetes. 4. predisposing to dental diseases. |
E. All of the above.
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The primary stress bearing area of the
maxillary complete denture is the A. hard palate. B. alveolar ridge. C. soft palate. D. zygoma. |
B. alveolar ridge.
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Side effects of therapeutic doses of
codeine may produce 1. constipation. 2. drowsiness. 3. nausea. 4. respiratory depression. |
1. constipation.
2. drowsiness. 3. nausea. |
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The primary retention of a Class II gold
inlay is achieved by 1. adding an occlusal dovetail. 2. increasing the parallelism of walls. 3. lengthening the axial walls. 4. placing a gingival bevel. |
1. adding an occlusal dovetail.
2. increasing the parallelism of walls. 3. lengthening the axial walls. |
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The tooth preparation for a porcelain
veneer must have a 1. rough surface. 2. space for the veneer material. 3. definite finish line. 4. margin at least 1mm supragingivally. |
2. space for the veneer material.
4. margin at least 1mm supragingivally. |
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In an 80 year old patient you would expect
1. a reduced size of the pulp chamber. 2. increased incidence of pulp stones. 3. increased tendency to pulpal fibrosis. 4. an increased pulpal vascularity. |
1. a reduced size of the pulp chamber.
2. increased incidence of pulp stones. 3. increased tendency to pulpal fibrosis. |
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Which of the following could cause
phonetic problems for patients with removable dentures? 1. Posterior teeth placed in a buccal position. 2. Excessive bulk in the palatal area. 3. Anterior teeth that are too long. 4. Bilaterally undercut ridges. |
1. Posterior teeth placed in a buccal
position. 2. Excessive bulk in the palatal area. 3. Anterior teeth that are too long. |
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In order to achieve a proper interproximal
contact when using a spherical alloy, which of the following is/are essential? 1. A larger sized condenser. 2. A thinner matrix band. 3. A properly placed wedge. 4. Use of mechanical condensation. |
1. A larger sized condenser.
2. A thinner matrix band. 3. A properly placed wedge. |
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A bitewing radiograph of tooth 1.4 reveals
caries penetrating one third into the mesial enamel. The correct management of tooth 1.4 is to A. place an amalgam restoration. B. place a porcelain inlay. C. place a direct composite restoration. D. apply fluoride and improve oral hygiene. |
D. apply fluoride and improve oral
hygiene |
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A patient with Alzheimer’s dementia
presents with his personal care worker. His daughter, who is his legal guardian, is unavailable. What is required to obtain informed consent for an elective invasive procedure? A. The patient’s presence implies consent. B. Obtain written consent from the patient. C. Obtain written consent from the personal care worker. D. Obtain consent from the patient’s daughter. |
D. Obtain consent from the patient’s
daughter. |
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Enamel pearls form when
A. ameloblasts migrate apically down the root. B. cells of the epithelial root sheath do not migrate away from the dentin. C. cells of the dental follicle fail to develop. D. epithelial rests transform into ameloblast vesicles. |
B. cells of the epithelial root sheath do
not migrate away from the dentin. |
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Extrusion of the rubber stopper of a local
anesthetic cartridge is most likely caused by A. faulty manufacturing. B. storage in a disinfectant solution. C. exposure to excessive heat. D. breakdown of the anesthetic solution. |
B. storage in a disinfectant solution.
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As a dentist in Canada, it is ethical to
refuse to treat a patient on the basis of 1. religious beliefs. 2. infectious disease. 3. physical handicap. 4. recognition of lack of skill or knowledge. |
4. recognition of lack of skill or
knowledge. |
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A vital canine is to be used as the anterior
abutment of a four unit fixed partial denture and it has 2.0mm remaining coronal tooth structure. The most acceptable foundation restoration would be A. bonded amalgam core build-up. B. a pin retained amalgam core buildup. C. a pin retained composite resin core build-up. D. intentional devitalization followed by a post and core restoration. |
D. intentional devitalization followed by
a post and core restoration. |
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Hydrocolloid impressions are removed
from the mouth with a snap because they exhibit A. syneresis. B. imbibition. C. viscoelasticity. D. low elastic recovery. E. low tear strength. |
E. low tear strength.
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The desirable relationship between the
coefficients of thermal expansion of an alloy (ε metal ) and a ceramic (εceramic) used for a metallo-ceramic restoration is A. ε metal significantly higher than εceramic. B. ε metal significantly lower than εceramic. C. ε metal equal to εceramic. D. ε metal slightly higher than εceramic. E. ε metal slightly lower than εceramic. |
D. ε metal slightly higher than εceramic.
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Zinc oxide eugenol cement is a/an
A. phosphate cement. B. phenolic cement. C. resin modified glass ionomer cement. D. polyalkenoic acid cement. E. adhesive resin cement. |
B. phenolic cement.
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Light-cured dental composites set when
exposed to light. Light is the A. initiator. B. reactor. C. catalyst. D. activator. E. terminator. |
D. activator.
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In alginate impression materials, sodium
phosphate (Na3PO4) is the A. reactor. B. catalyst. C. retarder. D. disinfectant. E. cross linking agent. |
C. retarder.
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Xerostomia can result from
1. Sjögren’s syndrome. 2. radiation therapy for oral cancer. 3. antidepressant drug therapy. 4. anticholinergics (Atropine). |
E. All of the above.
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The roots of the first permanent molar
should be completely formed by the age of A. six years. B. seven years. C. nine years. D. eleven years. E. thirteen years. |
D. eleven years.
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Which statement(s) is/are true about
diazepam? 1. It improves performance rating of fine motor skills. 2. It is more toxic when taken with ethyl alcohol. 3. It is available without prescription in Canada. 4. It produces a typical dependence syndrome. |
2. It is more toxic when taken with
ethyl alcohol. 4. It produces a typical dependence syndrome. |
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Which of the following is most likely to
displace the adjacent teeth? A. Lateral periodontal cyst. B. Dentigerous cyst. C. Periapical cemental dysplasia. D. Periapical abscess. E. Radicular cyst. |
B. Dentigerous cyst.
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A white, diffuse, wrinkled appearance of
the buccal mucosa which diminishes in prominence or disappears upon stretching is indicative of A. leukoedema. B. lichen planus. C. candidiasis. D. linea alba. E. white sponge nevus. |
A. leukoedema.
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A properly designed pontic should
A. stabilize opposing teeth. B. protect abutment teeth through its flexibility. C. completely occupy the space of the extracted tooth. D. provide for visual inspection of the margins of the retainers. |
A. stabilize opposing teeth.
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A vital canine is to be used as the anterior
abutment of a 4 unit fixed partial denture and it has 2mm of remaining coronal tooth structure. The most acceptable foundation restoration would be A. a bonded amalgam. B. a pin retained amalgam core buildup. C. a pin retained composite resin core build-up. D. intentional devitalization followed by a post and core restoration. |
D. intentional devitalization followed by
a post and core restoration. |
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A patient's 4 mandibular incisors were
traumatized 3 years ago in an accident. Radiographs now show apical radiolucencies associated with all 4 teeth. The recommended treatment is to A. test the pulp vitality and perform root canal therapy on teeth with no response. B. perform root canal therapy and curette the area. C. extract and place a bonded bridge. D. postpone treatment and recheck status periodically. |
A. test the pulp vitality and perform root
canal therapy on teeth with no response. |
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A clinical sign of unilateral fracture of the
body of the zygoma is A. cerebrospinal rhinorrhea. B. impaired hearing. C. subconjunctival haemorrhage. D. otorrhea. |
C. subconjunctival haemorrhage.
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A 55 year old female patient complains of
dry, burning mouth. The clinical and radiological examination shows xerostomia, periodontitis, multiple caries, periapical abscesses and candidiasis. What is the most likely diagnosis? A. AIDS. B. Diabetes mellitus. C. Multiple myeloma. D. Leukemia. |
B. Diabetes mellitus.
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The dimensional stability of polyether
impression material is considered to be good EXCEPT if the material is A. dehydrated. B. allowed to absorb water after setting. C. distorted by rapid removal of the impression from the mouth. D. contaminated with latex. |
B. allowed to absorb water after setting.
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For prevention of cross infection, which of
the following impression materials can be treated with a disinfecting spray solution/agent? A. Irreversible hydrocolloid (alginate). B. Polyether. C. Polysulfide. D. Polysiloxane. E. All of the above. |
E. All of the above.
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