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50 Cards in this Set
- Front
- Back
A 9 year old boy sustains a fracture of the
crown of his central incisor with minimal pulp exposure. The accident occurred one hour prior. A periapical radiograph reveals that the root of the tooth is intact but the apex is open. The most appropriate treatment is to A. pulp cap with calcium hydroxide and restore. B. perform a pulpotomy and seal temporarily. C. perform a pulpectomy and seal temporarily. D. perform a pulpectomy and fill immediately with gutta-percha and restore. |
A. pulp cap with calcium hydroxide and
restore. |
|
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. |
|
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. |
|
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. |
|
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.
|
|
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. |
|
The extraction of a maxillary deciduous
central incisor at the age of 6 years will cause A. loss of intercanine space. B. increased intercanine space. C. no change in intercanine space. D. decreased overjet. |
C. no change in intercanine space.
|
|
Amalgam
1. spherical alloys shrink slightly when setting. 2. lathe cut alloys expand slightly when setting. 3. admix alloys are dimensionally stable when setting. 4. high copper content alloys have improved resistance to tarnish and corrosion. |
4. high copper content alloys have
improved resistance to tarnish and corrosion. |
|
Amalgam is condensed in order to
1. adapt the amalgam to the cavity walls, floor and margins. 2. develop a uniform compact mass with minimum voids. 3. reduce excess mercury content. 4. overbuild the restoration to allow ‘carve back’ to eliminate the mercury-rich outer layer. |
1. adapt the amalgam to the cavity
walls, floor and margins. 2. develop a uniform compact mass with minimum voids. 3. reduce excess mercury content. |
|
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. |
|
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 |
1. rough surface.
2. space for the veneer material. 3. definite finish line. |
|
When exposing radiographic film, the
amount of radiation received by the patient is best reduced by A. collimation. B. decreased object-film distance. C. low kVp correlated with high milliamperage. D. decreased target-object distance |
A. collimation.
|
|
Cleft lip and palate usually result from
A. failure of proper union of the median and lateral nasal processes. B. failure of the union of the median nasal process with the lateral nasal and maxillary processes. C. anhidrotic ectodermal dysplasia. D. failure of development of both the lateral nasal and maxillary processes. |
B. failure of the union of the median
nasal process with the lateral nasal and maxillary processes. |
|
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. |
|
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.
|
|
To ensure a clinically acceptable setting
time, polyalkenoic cements contain A. salicylic acid. B. phosphoric acid. C. maleic acid. D. tartaric acid. E. itaconic acid. |
D. tartaric acid.
|
|
The muscle primarily responsible for
moving the mandible to a lateral position is the A. masseter. B. lateral (external) pterygoid. C. medial (internal) pterygoid. D. buccinator. E. temporalis. |
B. lateral (external) pterygoid.
|
|
A 75 year old male patient whose wife
died 10 months ago presents for his recall appointment. Looking wasted and fatigued, he confirms he has lost about 6kg in the last 8 months but is otherwise in good health. The most appropriate management for this patient is to A. recommend that he drink 3 cans of a nutritional supplement each day. B. refer him to a qualified dietician/nutritionist and follow up after his appointment. C. refer him back to his physician requesting a more thorough assessment. D. provide him with a copy of Canada’s Food Guide to Healthy Eating. |
C. refer him back to his physician
requesting a more thorough assessment. |
|
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. |
|
The tooth preparation for a porcelain
veneer must have a 1. coarse diamond finish. 2. space for the veneer material. 3. margin at least 1mm supragingivally. 4. definite gingival finish line. |
2. space for the veneer material.
4. definite gingival finish line. |
|
The most appropriate treatment for a
permanent central incisor with a necrotic pulp and a wide open apex is A. pulpotomy with calcium hydroxide. B. apexification with calcium hydroxide. C. apexification with zinc oxide. D. root canal therapy using guttapercha. E. root canal therapy followed by a retrograde filling. |
B. apexification with calcium
hydroxide. |
|
Which syndrome has multiple cysts of the
jaws? A. Gardner’s. B. Gorlin-Goltz. C. Peutz-Jeghers. D. Sjögren’s. |
B. Gorlin-Goltz.
|
|
Increasing the kVp results in
A. increased long scale image contrast. B. increased short scale image contrast. C. decreased long scale image contrast. D. decreased short scale image contrast. |
A. increased long scale image contrast.
|
|
The most appropriate radiograph for
examining an interproximal vertical bony defect of the alveolar process is the A. bitewing. B. periapical. C. occlusal. D. panoramic. |
A. bitewing.
|
|
Which of the following radiographic
techniques is NOT useful for assessing temporomandibular joint space? A. Panoramic. B. Arthrography. C. Corrected transcranial. D. Corrected tomography. |
A. Panoramic.
|
|
All of the following appear as midline
structures on periapical radiographs EXCEPT A. nasopalatine/incisive canal. B. anterior nasal spine. C. nasal septum. D. zygomatic process of the maxilla. |
D. zygomatic process of the maxilla.
|
|
The genial tubercles are best visualized on
which type of radiograph? A. Occlusal. B. Periapical. C. Bitewing. D. Panoramic. |
A. Occlusal.
|
|
Which anatomical structures form the
inverted Y (Y line) in maxillary periapical radiographs? A. Nasopalatine/incisive canal and floor of the nasal fossa. B. Anterior nasal spine and nasopalatine/incisive canal. C. Floor of the nasal fossa and maxillary sinus border. D. Zygomatic process of the maxilla and maxillary sinus border. |
B. Anterior nasal spine and
nasopalatine/incisive canal. |
|
The pterygomaxillary fissure is formed by
the maxilla and which other bone? A. Temporal. B. Sphenoid. C. Frontal. D. Occipital. |
B. Sphenoid.
|
|
A small, well-circumscribed, periapical
radiolucency on a mandibular incisor which is clinically asymptomatic and responds normally to vitality tests is most likely A. a periapical granuloma. B. sclerosing osteitis. C. a radicular cyst. D. periapical cemental dysplasia. |
D. periapical cemental dysplasia.
|
|
Appropriate management for the relief of
symptoms of primary herpetic gingivostomatitis in an immunocompromised patient may include 1. Diphenhydramine elixir 12.5mg/5ml. 2. Triamcinolone acetonide in Orabase®. 3. Acyclovir capsules 200mg. 4. Dexamethasone elixir 0.5mg/ml. |
1. Diphenhydramine elixir 12.5mg/5ml.
3. Acyclovir capsules 200mg. |
|
Localized gingival recession of a
mandibular permanent incisor in an 8 year old can be caused by A. vitamin C deficiency. B. ankyloglossia. C. localized aggressive (juvenile) periodontitis. D. traumatic occlusion. E. necrotizing ulcerative gingivitis. |
C. localized aggressive (juvenile)
periodontitis. |
|
A lower molar requiring a crown has an
extensive MOD amalgam restoration. The crown margin should be placed A. on the existing amalgam. B. at the amalgam/tooth junction. C. 1mm apical to the amalgam margin. D. 2mm apical to the amalgam margin |
C. 1mm apical to the amalgam margin.
|
|
For an acid-etched Class III composite
resin, the cavosurface margin of the cavity can be bevelled to 1. eliminate the need for internal retention. 2. improve convenience form. 3. aid in finishing. 4. increase the surface area for etching. |
4. increase the surface area for etching.
|
|
For a cast gold restoration, a gingival
bevel is used instead of a shoulder because a bevel 1. protects the enamel. 2. increases retention. 3. improves marginal adaptation. 4. increases the thickness of gold. |
1. protects the enamel.
3. improves marginal adaptation. |
|
When smokers are compared to
nonsmokers, the development of inflammation in response to plaque accumulation is A. increased. B. reduced. C. the same. |
B. reduced.
|
|
A crown margin can be extended
subgingivally when required 1. for esthetics. 2. to increase retention. 3. to reach sound tooth structure. 4. for caries prevention. |
1. for esthetics.
2. to increase retention. 3. to reach sound tooth structure. |
|
A laboratory remount of processed
dentures is done in order to correct occlusal disharmony produced by errors primarily in the A. mounting of the casts in the articulater. B. registration of jaw relation records. C. processing of acrylic. D. registration of condylar guidance. |
C. processing of acrylic.
|
|
The coefficient of thermal expansion of
the metal relative to the porcelain for constructing a ceramometal (porcelain bonded to metal) crown should be A. slightly less. B. the same. C. slightly more. D. significantly less. |
C. slightly more.
|
|
The most practical method to significantly
reduce the setting time of stone and plaster is to use A. warm mixing water. B. a calcium sulfate dihydrate nucleating agent. C. a sodium sulfate nucleating agent. D. a longer mixing time. |
B. a calcium sulfate dihydrate
nucleating agent. |
|
Aggressive periodontitis has all of the
following features EXCEPT A. rapid attachment loss. B. suspected periodontal microbial pathogens. C. radiographic evidence of bone loss. D. ulcerations of the gingiva. |
D. ulcerations of the gingiva.
|
|
The periodontal probe should be inserted
into the sulcus A. parallel to the long axis of the tooth. B. parallel to the root surface. C. with a firm pushing motion. D. with a firm lateral motion. |
A. parallel to the long axis of the tooth.
|
|
Which periodontal pathogen can use the
hormone estrogen as a growth factor? A. Porphyromonas gingivalis. B. Actinobacillus actinomycetemcomitans. C. Prevotella intermedia. D. Bacteroides forsythus. |
C. Prevotella intermedia.
|
|
A patient with a pre-existing MOD
amalgam restoration has just had endodontic therapy completed on tooth 4.6 but cannot afford a laboratory fabricated final restoration. Interim restorative management of 4.6 with the best prognosis is to A. restore with a MOD amalgam. B. reduce the occlusal out of occlusion and restore with a MOD amalgam. C. cusp cap the buccal and lingual cusps and restore with a MOD amalgam. D. restore with a bonded MOD composite resin. |
B. reduce the occlusal out of occlusion
and restore with a MOD amalgam. |
|
Which of the following is NOT a sign of
occlusal trauma? A. Fremitus. B. Gingival recession. C. Widened periodontal ligament. D. Tooth migration. |
B. Gingival recession.
|
|
What is the essential etiologic factor for
generalized aggressive periodontitis? A. Altered lymphocyte activity. B. Generalized subgingival calculus. C. Impaired polymorphonuclear phagocytosis. D. Bacterial plaque. |
C. Impaired polymorphonuclear
phagocytosis. |
|
The combination (Kelley’s) syndrome
refers to the destructive changes associated with the long term wear of a mandibular distal extension removable partial denture opposing a complete upper denture. Which of the following clinical findings is NOT normally characteristic of this syndrome? A. Reduction in morphologic face height. B. Advanced anterior maxillary ridge resorption. C. Down growth of the maxillary tuberosities. D. Advanced alveolar bone resorption under the posterior partial denture base areas. |
A. Reduction in morphologic face
height. |
|
On a semi-adjustable articulator, the
incisal guide table represents A. a reference point for the establishment of occlusal vertical dimension. B. the anterior equivalent of condylar guidance. C. a mechanical equivalent of the horizontal and vertical overlap of the anterior teeth. D. the mechanical equivalent of the Curve of Wilson. |
C. a mechanical equivalent of the
horizontal and vertical overlap of the anterior teeth. |
|
A 10-15 second application of 37%
phosphoric acid on prepared dentin will result in all of the following EXCEPT A. elimination of the smear layer. B. increased diameter of the dentinal tubules. C. demineralization of the superficial dentin. D. elimination of the collagen fibres. |
D. elimination of the collagen fibres.
|
|
The full palatal strap major connector is
indicated where A. there is a high, narrow palatal vault. B. a well-defined, undercut palatal torus is present. C. very few teeth remain in a flat or Ushaped arch. D. palatal tissue is soft and compressible. |
C. very few teeth remain in a flat or Ushaped
arch. |