MJDF Dental Anatomy & Physiology

Question 1

How many cusps does a mandibular first molar typically have?

Accepted Answer

Five (three buccal, two lingual)

Answer

Four

Answer

Six

Answer

Three

Question 2

Which tooth has the longest root in the permanent dentition?

Accepted Answer

Maxillary canine

Answer

Mandibular first molar

Answer

Maxillary central incisor

Answer

Mandibular canine

Question 3

What is the primary function of the periodontal ligament (PDL)?

Accepted Answer

Suspend the tooth in the alveolus, transmit occlusal forces, and provide sensory feedback

Answer

Provide nutrition to the enamel

Answer

Form secondary dentine

Answer

Mineralise the cementum

Question 4

Which structure forms the bulk of the tooth and determines its overall shape?

Accepted Answer

Dentine

Answer

Enamel

Answer

Cementum

Answer

Pulp

Question 5

What type of epithelium lines the oral mucosa of the hard palate?

Accepted Answer

Keratinised stratified squamous epithelium

Answer

Non-keratinised stratified squamous

Answer

Simple columnar

Answer

Pseudostratified columnar

Question 6

What is the average length of the maxillary central incisor root?

Accepted Answer

13 mm

Answer

8 mm

Answer

10 mm

Answer

17 mm