Oral Histology MCQs

Page No. 23

Matrix vesicles_______________?


aAre found in mantle dentin


bContain collagen


cProduce alkaline phosphatase


dInhibit mineralization



Which of the following is correct?


aReparative dentin is characterized by having fewer and more twisted tubules than normal dentin and may include odontoblasts


bDead tracts appear black in transmitted and white in reflected ligth


cSclerotic transparent dentin appears transparent or light in transmitted light and dark in reflected light


dAll of the above


View Answer All of the above

Cementum_____________?


a Is derived from the sheath of hertwig


bIs acellular in the apical third of the tooth


cOften overlaps the enamel


d Does not contain collagen fibres



Butt joint in cementoenamel junctions seen is _________% of cases?


a10%


b30%


c60%


d90%


View Answer 30%

Inorganic content of cementum is_____________?


a Less than bone


b More than bone


cEqual to that of bone


d More than that of enamel


View Answer Less than bone

At the cemento enamel junction, which of the following occurs_____________?


aCementum meets enamel


bCementum overlaps enamel


cCementum does not meet enamel


dAll of the above


View Answer All of the above

Acellular cementum is typically found in_____________?


aCoronal half of root


bApical half of root


cApex of root


dEntire root


View Answer Coronal half of root

Which of the following is true______________?


aThe uncalcified matrix of cementum is called cementoid


bCementum contain type I collagen predominantly


cCementodentinal junction is sometimes scallopes in deciduous teeth and smooth in permanent teeth


dAll of the above


View Answer All of the above

If cementum is not formed______________?


aAnkylosis may occur


bExforliation of teeth occur


c Delayed eruption


dNo change occurs



Chronic periapical inflammation is usually associated with____________?


aAnkylosis


bResorption of cementum


cHypertrophy of cementum


d Hyperplasia of cementum



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