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oral anatomy MCQs

Practise focused oral anatomy questions with marked answers for exam preparation and subject revision.

oral anatomy Mcqs

1. Which of the following muscle helps in depressing the mandible ___________?
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A. Lateral pterygoid

B. Temporalis

C. Medial pterygoid

D. Massetor

2. Primary teeth differ from permanent teeth in following aspects ?
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A. Thickness of enamel and dentin

B. All of the above

C. Pulp chambers are longer

D. Roots are flaring

3. Mesiodistal width is more than cervico- incisal length of crown in_____________?
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A. Permanent mandibular lateral incisors

B. Permanent central incisors

C. Decidous maxillary central incisors

D. Permanent maxillary canines

4. In which of the following areas is the alveolar process the thinnest_____________?
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A. Lingual to the mandibular first molar

B. Buccal to the mandibular central incisors

C. Lingual to the maxillary canines

D. Lingual to the maxillary central incisors

5. A radiograph of 4- years old child reveals no evidence of calcification of mandibular second pre molar. This indicates______________?
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A. Primary second molar extracted to allow mesial drifting of permanent first molar

B. It is too early to make final predication

C. The child may never develop premolars

D. The teeth may develop later

6. The primary teeth that present the most outstanding morpholgic deviations from permanent teeth are______________?
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A. Central incisors

B. Canines

C. Mandibular first molar

D. Mandibular second molar

7. Difference between primary and permanent enamel is_______________?
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A. In prism arrangement

B. None of the above

C. No difference in enamel, difference in dentin

D. in mineral content

8. Which of the following decidous molars bears the greatest resemblance to a premolar _____________?
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A. Mandibular second

B. Maxillary second

C. Mandibular first

D. Maxillary first

9. How many cusps does the crown of the maxillary first primary molar have ?
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A. 4

B. 5

C. 3

D. 2

10. Desmodont is another name for_____________?
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A. periodontal ligament

B. Dehiscence

C. The tooth with one wall pocket

D. Tooth with three walled pocket

11. In normal occlusion , with which grooves / surface of the permanent mandibular first molar does the mesiobuccal cusp of the permanent maxillary first molar occlude______________?
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A. Distobuccal groove

B. Mesial surface

C. Transverse groove

D. Mesiobuccal surface

12. What is the thickness of the layer of primsless enamel found in primary teeth_____________?
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A. 50?m

B. 75?m

C. 25 ?m

D. 100?m

13. Eruption date of decidous maxillary 2nd molar is ______________?
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A. 20 months

B. 18 months

C. 28 months

D. 24 months

14. Group function occlusion is common in_____________?
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A. Above 30 years

B. 15 -25 years

C. Edentulous patients

D. 10 14 years

15. Kalu, a 6- years old child, received tetracycline. Noticeable discoloration will be seen in______________?
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A. Canines, premolars and2nd molars

B. Incisors and 1st molars

C. Canine and 2nd molars

D. Premolars, incisors and 1st molars

16. The premolar alveoli are what shape in cross section_____________?
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A. Triangular

B. Rectangular

C. Oval

D. Kidney shaped

17. When viewed occlusally, a primary mandibular second molar closely resembles which of the following mandibular teeth ?
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A. Permanent first molar

B. Permanent second molar

C. Second premolar

D. Primary first molar

18. The first permanent tooth to erupt in the oral cavity is the_____________?
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A. Mandibular first molar

B. Mandibular central incisor

C. Maxillary central incisor

D. Maxillary first molar

19. In occlusion the teeth have_______________?
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A. Surface to surface contact

B. Edge to edge contact

C. Cusp to cusp contact

D. Marginal contact

20. Primary canine erupts______________?
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A. After D

B. Before B

C. After B

D. After E

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