Oral Anatomy MCQs

Page No. 24

How many roots does a primary maxillary first molar have ___________?


aOne


bTwo


cThree


dFour


View Answer Three

Roots of primary and secondary teeth are different in that the primary roots are more divergent and flaring. The other difference _____________?


aPrimary roots show less a accessory and lateral canals


bPrimary roots resorb more easily


cPrimary roots are shorter


dNone of the above



When viewed occlusally, a primary mandibular second molar closely resembles which of the following mandibular teeth ?


aPermanent second molar


bPermanent first molar


cSecond premolar


dPrimary first molar


View Answer Permanent first molar

Pulp chambers and roots canals in decidous teeth______________?


aWide and deep


bShallow and narrow


cWide and narrow


dShallow and wide


View Answer Shallow and wide

Primary teeth differ from permanent teeth in following aspects ?


aThickness of enamel and dentin


bPulp chambers are longer


cRoots are flaring


dAll of the above


View Answer All of the above

Transverse ridge is prominent on occlusal surface of which of the following decidous teeth ?


aMandibular first molar


bMaxillary first molar


cMandibular second molar


dMaxillary second molar



The highest ( longest ) and sharpest cusp on the decidous mandibular first molar is____________?


aMesiolingual


bDistolingual


cMesiobuccal


dDistobuccal


View Answer Mesiolingual

Mesiodistal width is more than cervico- incisal length of crown in_____________?


aPermanent central incisors


bDecidous maxillary central incisors


cPermanent maxillary canines


dPermanent mandibular lateral incisors



Among the difference between teeth in the decidous and the permanent dentition is that_____________?


aBuccal surfaces of the permanent molars are flatter


bCervical ridges are more pronounced in permanent molars


cRoot trunks of decidous teeth are larger compared with their overall root lengths


dCrowns of decidous incisors are wider mesiodistally than their cervico incisal lengths



Difference between primary and permanent enamel is_______________?


aIn prism arrangement


bin mineral content


cNo difference in enamel, difference in dentin


dNone of the above


View Answer In prism arrangement

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