Hi everybody,
Could somebody please post the answers to these questions. These are from the acfd site sample questions. I read somewhere on the forum that somebody got 15 out of the 30 questions on the site. but i dont know it was in the canadian exam or nbde. But i thought it wouldnt be of any loss if we could get the correct answers to these questions.
1. In a Class I occlusion the buccal cusps of maxillary teeth occlude
A. with the lingual surface of the mandibular teeth.
B. in the central fossa of the mandibular teeth.
C. with the top of the buccal cusp of the mandibular teeth.
D. with the buccal surface of the mandibular teeth.
4. After the crown completion stage, trauma to a developing tooth may be responsible for
A. enamel hypoplasia.
B. gemination.
C. dilaceration.
D. fusion.
9. Which articular disease most often accompanies Sjögrens syndrome?
A. Suppurative arthritis.
B. Rheumatoid arthritis.
C. Degenerative arthrosis.
D. Psoriatic arthritis.
E. Lupus arthritis.
10. Acute osteomyelitis of the mandible differs from malignant neoplasm because it
A. is asymptomatic.
B. is associated with high fever.
C. has an excellent prognosis.
D. has well defined radiographic margins.
12. The principal microorganism in aggressive periodontitis (juvenile periodontitis) is
A. porphyromonas gingivalis.
B. fusobacterium vincenti.
C. actinobacillus actinomycetemcomitans.
D. prevotella intermedia.
13. The objective of scaling and root planing during periodontal therapy is to remove
A. plaque, calculus, contaminated cementum and junctional epithelium.
B. plaque and calculus exclusively.
C. plaque, calculus and crevicular epithelium.
D. plaque, calculus and contaminated cementum.
E. all cementum associated with periodontitis.
14. A patient with congestive heart failure may have
1. epistaxis.
2. shortness of breath.
3. rhinophyma.
4. pitting edema of the ankles.
A. (1) (2) (3)
B. (1) and (3)
C. (2) and (4)
D. (4) only
E. All of the above.
15. A patient presents with hypodontia, conical teeth, fine, scanty, fair hair, and an intolerance to hot weather. The most likely diagnosis is
A. achondroplasia.
B. malignant hyperthermia.
C. ectodermal dysplasia.
D. cystic fibrosis.
18. Xerostomia can result from
1. Sjögrens syndrome.
2. radiation therapy for oral cancer.
3. antidepressant drug therapy.
4. anticholinergics (Atropine).
A. (1) (2) (3)
B. (1) and (3)
C. (2) and (4)
D. (4) only
E. All of the above.
19. The muscles used when closing the jaws to maximum intercuspation include
A. medial (internal) and lateral pterygoid, masseter, geniohyoid.
B. temporalis, medial pterygoid, masseter, geniohyoid.
C. medial pterygoid, temporalis, masseter.
D. lateral (external) pterygoid, masseter, temporalis, geniohyoid.
20. Hypothyroidism affects dental development by
A. causing microdontia.
B. delaying the eruption timetable.
C. causing sclerotic bone to form over the occlusal surface of erupting teeth.
D. accelerating the eruption timetable.
21. The lingual nerve contributes sensory fibers to the
1. tongue.
2. lingual surface of the mandible.
3. floor of the mouth.
4. mandibular posterior teeth.
A. (1) (2) (3)
B. (1) and (3)
C. (2) and (4)
D. (4) only
E. All of the above.
23. Which antibiotic is chiefly bactericidal?
A. Penicillin.
B. Erythromycin.
C. Tetracycline.
D. Chloramphenicol.
E. Clindamycin.
24. The periodontium is best able to tolerate forces directed to a tooth
A. horizontally.
B. laterally.
C. obliquely.
D. vertically.
25. Abnormalities in blood clotting may be associated with a deficiency of vitamin
A. B12.
B. C.
C. E.
D. K.
26. Molecular attraction between unlike substances is called
A. adhesion.
B. cohesion.
C. syneresis.
D. absorption.
30. 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.
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