ORE Part 1 Dental Anatomy and Histology

Question 1

Which permanent tooth has the longest root in the human dentition?

Accepted Answer

Upper canine

Answer

Upper central incisor

Answer

Lower first molar

Answer

Upper first premolar

Question 2

What is the Tome's process associated with?

Accepted Answer

Ameloblasts secreting enamel matrix

Answer

Osteoblasts forming alveolar bone

Answer

Odontoblasts forming dentine

Answer

Cementoblasts depositing cementum

Question 3

How many root canals does a mandibular first molar typically have?

Accepted Answer

Three

Answer

Two

Answer

Four

Answer

Five

Question 4

Which type of dentine is formed as a physiological response throughout life?

Accepted Answer

Secondary dentine

Answer

Primary dentine

Answer

Tertiary (reparative) dentine

Answer

Mantle dentine

Question 5

The Hunter-Schreger bands seen in enamel are caused by which structural feature?

Accepted Answer

Changes in direction of enamel rod groups

Answer

Incremental lines of Retzius

Answer

Neonatal line

Answer

Enamel tufts at the DEJ

Question 6

Which tooth is most commonly congenitally absent (excluding third molars)?

Accepted Answer

Lower second premolar

Answer

Upper lateral incisor

Answer

Lower central incisor

Answer

Upper first premolar