Oral Anatomy MCQs

Page No. 2

Posterior embrasures are generally larger on the lingual than on the facial, with the contact area within the facial moiety, except between maxillary_______________?


aPremolars

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b1st and 2nd molar

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c1st premolar and cane

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dFirst molar and 2nd premolar

✓



All are true about calciotraumatic line, except______________?


aDue to caries

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bDue to death of odontoblastic layer

✓


cIt remains after caries is removed

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dBecause of odontoblastic migration from cell rich zone

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The faciolingual angulation of the upper central incisor is approximately___________________?


a20°

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b28°

✓


c33°

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d38°

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View Answer 28°

The biting forces at molar region during mastication is_______________?


a20 to 55 pounds

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b30 to 75pounds

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c50 to 75pounds

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d90 to 200 pounds

✓


View Answer 90 to 200 pounds

All embrasure spaces are reflection of the______________?


aForm of the teeth involved

✓


bSize of the teeth involved

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cEruption sequence involved

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dNone of the above

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The embrasure areas in the following areas are contentious______________?


aLabial and lingual

✓


bLingual and Occlusal

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cIncisal and Occlusal

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dLabial and occlusal

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View Answer Labial and lingual

Largest embrasure lies between______________?


aMaxillary central incisors

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bMaxillary central and lateral incisor

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cMaxillary canine and first premolar

✓


dMaxillary lateral incisor and canine

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The tooth that is commonly seen in an abnormal relation and contact with its adjacent teeth of the same arch is ________________?


aMandibular first premolar

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bMandibular lateral incisor

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cMaxillary central incisor

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dMaxillary lateral incisor

✓



The contact area on the distal surface of a maxillary first premolar should be placed in________________?


aMiddle 3rd of proximal surface with lingual embrasure greater than the facial embrasure

✓


bOcclusal 3rd of proximal surface with the lingual embrasure greater than facial embrasure

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cOcclusal 3rd of proximal surface with facial embrasure greater than lingual embrasure

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dMiddle 3rd with facial embrasure greater than the lingual embrasure

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Distal contact of upper first premolar is________________?


aLower than mesial contact area

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bLittle cervical to junction of occlusal and middle third of crown

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cHigher than mesial contact area

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dA and B

✓


View Answer A and B

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