EFDA - Expanded Function Dental Auxiliary Dental Anatomy and Occlusion Questions and Answers

Question 1

A patient presents with a Class II, Division 2 malocclusion. Which of the following characteristics is a defining feature of this classification?

Accepted Answer

Retroclined maxillary central incisors.

Answer

Protruded maxillary central incisors.

Answer

A posterior crossbite.

Answer

An open bite tendency.

Question 2

Which permanent teeth succeed the primary molars?

Accepted Answer

Permanent premolars

Answer

Permanent molars

Answer

Permanent canines

Answer

Permanent incisors

Question 3

The Cusp of Carabelli is an accessory cusp most frequently found on which surface of which tooth?

Accepted Answer

Mesiolingual of a maxillary first molar

Answer

Distobuccal of a mandibular first molar

Answer

Mesiolingual of a mandibular first molar

Answer

Distobuccal of a maxillary second molar

Question 4

During a protrusive movement of the mandible, which teeth ideally provide the primary guidance to disocclude the posterior teeth?

Accepted Answer

Maxillary and mandibular incisors

Answer

Maxillary and mandibular canines

Answer

Maxillary and mandibular molars

Answer

Maxillary and mandibular premolars

Question 5

Which of the following best defines centric occlusion?

Accepted Answer

The maximum intercuspation of the maxillary and mandibular teeth.

Answer

The most retruded position of the condyles in the glenoid fossa.

Answer

A jaw position determined solely by ligament and muscle guidance.

Answer

The end-to-end contact of the anterior teeth.

Question 6

In a normal occlusal relationship (Class I), which cusps are considered the non-functional or non-supporting cusps?

Accepted Answer

Buccal cusps of maxillary posterior teeth and lingual cusps of mandibular posterior teeth.

Answer

Lingual cusps of maxillary posterior teeth and buccal cusps of mandibular posterior teeth.

Answer

Buccal cusps of both maxillary and mandibular posterior teeth.

Answer

Lingual cusps of both maxillary and mandibular posterior teeth.