Oral Anatomy MCQs

Page No. 15

Which of the following moment are performed by a non- working condyle ?


aStraightward

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bDown wards forwards and lateral

✓


cDown wards forwards and medial

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dDown wards Back wards and medial

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Retrusion of mandible is achieved by _______________?


aLateral pterygoid

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bTemporalis

✓


cMasseter

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dNone of the above

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View Answer Temporalis

The premolar alveoli are what shape in cross section_____________?


aRectangular

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bTriangular

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cKidney shaped

✓


dOval

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View Answer Kidney shaped

The maxillary teeth which have single antagonist are__________?


aLateral incisors

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bPermanent canines

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cPermanent central incisors

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dThird molars

✓


View Answer Third molars

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


aDistobuccal groove

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bMesial surface

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cMesiobuccal surface

✓


dTransverse groove

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View Answer Mesiobuccal surface

When a molar has no opposing tooth, it can become_______________?


aExtruded

✓


bIntruded

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cProtruded

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dRetruded

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View Answer Extruded

In centric occlusion, the cusp tip of the maxillary canine is in alignment with which mandibular tooth_____________?


aFacial embrasure of canine and premolar

✓


bIncisal embrasure of canine and premolar

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cDistal ridge of the cusp of mandibular canine

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dMesial ridge on the facial cusp of mandibular first premolar

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In the intercuspal position, the lingual cusp of maxillary 2nd premolar contacts the______________?


aDistal fossa of mandibular 2ndpremolar

✓


bMesial fossa of mandibular 1st molar

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cDistal marginal ridge of mandibular 2ndmolar

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dDistal marginal ridge of mandibular 1stmolar

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The key to occlusion is_______________?


aMaxillary permanent first molar

✓


bMaxillary permanent second molar

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cMaxillary primary first molar

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dMaxillary primary second molar

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The incisal edges and the incisal thirds of facial surfaces of mandibular incisors and canines generally oppose lingual surfaces of maxillary incisor and canines _____________?


aWithin the incisor thirds

✓


bAt the junction of middle and cervical thirds

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cAt the linguo cervical ridges

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dImmediately incisal to cingulam

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