The shallow furrows on the enamel surface, where stria of Retzius end are known as _______________ ?
A. Cracks
B. Pellicle
C. perikymata
D. Enamel lamellae
Oral Histology
The key hole, pattern appearance in the cross section is feature of______________?
The key hole, pattern appearance in the cross section is feature of______________?
A. Aprismatic enamel
B. Prismatic enamel
C. Intertubular dentin
D. Intratubular dentin
The class of low molecular weight calcium binding proteins seen predominantly in developing enamel are_____________?
The class of low molecular weight calcium binding proteins seen predominantly in develog enamel are_____________?
A. Enamelin
B. Amelogenin
C. Tuftelin
D. Ameloplakin
Metalloprotienases are used in which stage of the amelogenesis_____________?
Metalloprotienases are used in which stage of the amelogenesis_____________?
A. Organising
B. Formative/ Secretory
C. Protective
D. Desmolytic
Nutritional supply of the ameloblasts during most of their life cycle is from the_____________?
Nutritional supply of the ameloblasts during most of their life cycle is from the_____________?
A. Dental pulp
B. Odontoblastic processes
C. Dental sac
D. Reduced dental organ
Neonatal line is also referred to as______________?
Neonatal line is also referred to as______________?
A. Retzius line
B. Line of cross striations
C. Incremental lines
D. Line of enamel tufts
Among the following the structure that is most calcified is_______________?
Among the following the structure that is most calcified is_______________?
A. Enamel lamella
B. Enamel rod
C. Enamel sdle
D. Enamel tuft
Synthesis of enamel matrix proteins occurs in the________________?
Synthesis of enamel matrix proteins occurs in the________________?
A. Outer enamel epithelium
B. Ameloblast
C. Stratum intermedium
D. Stratum granulosum
Enamel is laid down______________?
Enamel is laid down______________?
A. Mainly by odontoblasts
B. Mainly by ameloblasts
C. Only on odontoblasts
D. Only by ameloblasts
The striking difference between enamel and other mineralized tissues is______________?
The striking difference between enamel and other mineralized tissues is______________?
A. Presence of high percentage of organic matrix
B. Presence of incremental lines
C. Enamel has high reparative capacity
D. Most of organic component is lost during mineralization