Oral Histology MCQs

Page No. 23

Matrix vesicles_______________?


aAre found in mantle dentin

✓


bContain collagen

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cProduce alkaline phosphatase

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dInhibit mineralization

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Which of the following is correct?


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

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bDead tracts appear black in transmitted and white in reflected ligth

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

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dAll of the above

✓


View Answer All of the above

Cementum_____________?


a Is derived from the sheath of hertwig

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bIs acellular in the apical third of the tooth

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cOften overlaps the enamel

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d Does not contain collagen fibres

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


a10%

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b30%

✓


c60%

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d90%

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View Answer 30%

Inorganic content of cementum is_____________?


a Less than bone

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b More than bone

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cEqual to that of bone

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d More than that of enamel

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View Answer Less than bone

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


aCementum meets enamel

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bCementum overlaps enamel

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cCementum does not meet enamel

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dAll of the above

✓


View Answer All of the above

Acellular cementum is typically found in_____________?


aCoronal half of root

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bApical half of root

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cApex of root

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dEntire root

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View Answer Coronal half of root

Which of the following is true______________?


aThe uncalcified matrix of cementum is called cementoid

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bCementum contain type I collagen predominantly

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

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dAll of the above

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View Answer All of the above

If cementum is not formed______________?


aAnkylosis may occur

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bExforliation of teeth occur

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c Delayed eruption

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dNo change occurs

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Chronic periapical inflammation is usually associated with____________?


aAnkylosis

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bResorption of cementum

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cHypertrophy of cementum

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d Hyperplasia of cementum

✓



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