ORE Part 1 Dental Anatomy and Histology 2

Question 1

What is the primary mineral component of dental enamel?

Accepted Answer

Hydroxyapatite

Answer

Calcium carbonate

Answer

Fluorapatite

Answer

Tricalcium phosphate

Question 2

The cementoenamel junction (CEJ) shows three possible relationships. Which is the most common arrangement?

Accepted Answer

Cementum overlaps enamel

Answer

Enamel overlaps cementum

Answer

Cementum and enamel meet edge to edge

Answer

A gap exists between cementum and enamel exposing dentine

Question 3

Which cells are responsible for forming cementum?

Accepted Answer

Cementoblasts

Answer

Osteoblasts

Answer

Ameloblasts

Answer

Fibroblasts

Question 4

The dental papilla gives rise to which structure of the developed tooth?

Accepted Answer

Dentine and pulp

Answer

Enamel

Answer

Cementum

Answer

Periodontal ligament

Question 5

Which permanent tooth is the first to erupt in the mouth?

Accepted Answer

Lower first molar

Answer

Lower central incisor

Answer

Upper central incisor

Answer

Upper first molar

Question 6

Interglobular dentine is found primarily in which part of the tooth?

Accepted Answer

In the crown dentine, just below the mantle dentine

Answer

Within the pulp

Answer

At the enamel surface

Answer

In the cementum