Oral Histology MCQs

Page No. 14

Among the following the structure that is most calcified is_______________?


aEnamel lamella


b Enamel rod


cEnamel spindle


dEnamel tuft


View Answer Enamel rod

Neonatal line is also referred to as______________?


aRetzius line


bLine of cross striations


cIncremental lines


d Line of enamel tufts


View Answer Incremental lines

Nutritional supply of the ameloblasts during most of their life cycle is from the_____________?


a Dental pulp


b Odontoblastic processes


cDental sac


dReduced dental organ


View Answer Dental sac

Metalloprotienases are used in which stage of the amelogenesis_____________?


aOrganising


bFormative/ Secretory


cProtective


d Desmolytic


View Answer Formative/ Secretory

The class of low molecular weight calcium binding proteins seen predominantly in developing enamel are_____________?


aEnamelin


bAmelogenin


cTuftelin


dAmeloplakin


View Answer Amelogenin

The key hole, pattern appearance in the cross section is feature of______________?


aAprismatic enamel


b Prismatic enamel


cIntertubular dentin


dIntratubular dentin


View Answer Prismatic enamel

The shallow furrows on the enamel surface, where stria of Retzius end are known as _______________ ?


aCracks


b Pellicle


c perikymata


dEnamel lamellae


View Answer perikymata

The average width of enamel rods is______________?


a10mm


b5mm


c2mm


d0.5mm


View Answer 5mm

Dark bonds that are present in enamel rods at intervals of 4 μms are______________?


aNeonantal bands


bCross striations


cStriae of Retzius


dHunter-Schregar bands


View Answer Cross striations

Enamel can act in a sense like a_______________?


aPermeable membrane


b Impermeable membrane


c Semipermeable membrane


dInfrapermeable membrane



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