DDS Dental Anatomy and Histology

Question 1

Which layer of enamel is formed first during tooth development?

Accepted Answer

Inner enamel layer

Answer

Outer enamel layer

Answer

Dentinoenamel junction layer

Answer

Striae of Retzius

Question 2

What is the primary organic component of mature enamel?

Accepted Answer

Enamelin

Answer

Amelogenin

Answer

Tuftelin

Answer

Ameloblastin

Question 3

The Tome's process is an extension of which cell?

Accepted Answer

Ameloblast

Answer

Odontoblast

Answer

Fibroblast

Answer

Cementoblast

Question 4

Which type of dentin is produced throughout the life of the tooth in response to normal physiologic stimuli?

Accepted Answer

Secondary dentin

Answer

Primary dentin

Answer

Tertiary dentin

Answer

Sclerotic dentin

Question 5

The perikymata visible on the crown surface of a tooth correspond to which histologic structure?

Accepted Answer

Striae of Retzius

Answer

Hunter-Schreger bands

Answer

Enamel tufts

Answer

Enamel spindles

Question 6

Which root cementum type contains entrapped cementoblasts within its matrix?

Accepted Answer

Cellular intrinsic fiber cementum

Answer

Acellular afibrillar cementum

Answer

Acellular extrinsic fiber cementum

Answer

Cellular mixed stratified cementum