Oral Anatomy MCQs

Page No. 15

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


aStraightward


bDown wards forwards and lateral


cDown wards forwards and medial


dDown wards Back wards and medial



Retrusion of mandible is achieved by _______________?


aLateral pterygoid


bTemporalis


cMasseter


dNone of the above


View Answer Temporalis

The premolar alveoli are what shape in cross section_____________?


aRectangular


bTriangular


cKidney shaped


dOval


View Answer Kidney shaped

The maxillary teeth which have single antagonist are__________?


aLateral incisors


bPermanent canines


cPermanent central incisors


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


bMesial surface


cMesiobuccal surface


dTransverse groove


View Answer Mesiobuccal surface

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


aExtruded


bIntruded


cProtruded


dRetruded


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


cDistal ridge of the cusp of mandibular canine


dMesial ridge on the facial cusp of mandibular first premolar



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


aDistal fossa of mandibular 2ndpremolar


bMesial fossa of mandibular 1st molar


cDistal marginal ridge of mandibular 2ndmolar


dDistal marginal ridge of mandibular 1stmolar



The key to occlusion is_______________?


aMaxillary permanent first molar


bMaxillary permanent second molar


cMaxillary primary first molar


dMaxillary primary second molar



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


cAt the linguo cervical ridges


dImmediately incisal to cingulam



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