EFDA Anatomy and Occlusion 2

Question 1

Which cusp of the maxillary first molar is considered the primary centric holding cusp?

Accepted Answer

Mesiolingual cusp

Answer

The mesiolingual cusp (cusp of Carabelli's side) is the largest and primary centric holding cusp of the maxillary first molar.

Question 2

The oblique ridge on the maxillary first molar connects which two cusps?

Accepted Answer

Distobuccal and mesiolingual

Answer

The oblique ridge connects the distobuccal cusp to the mesiolingual cusp, crossing the occlusal surface diagonally.

Question 3

In Angle's Class II malocclusion, how is the mandibular first molar positioned relative to the maxillary first molar?

Accepted Answer

Distal to its normal position

Answer

In Class II malocclusion, the mesiobuccal cusp of the maxillary first molar occludes anterior to the buccal groove of the mandibular first molar, placing the mandible distally.

Question 4

Which nerve supplies sensory innervation to the mandibular anterior teeth?

Accepted Answer

Incisive nerve

Answer

The incisive nerve, a terminal branch of the inferior alveolar nerve, provides sensory innervation to the mandibular anterior teeth and their supporting structures.

Question 5

The cementoenamel junction (CEJ) is significant in periodontics because it marks:

Accepted Answer

The division between enamel and cementum

Answer

The CEJ marks the anatomical boundary between enamel (crown) and cementum (root), serving as a reference point for measuring attachment levels.

(EFDA) Expanded Function Dental Auxiliary Practice Test

(EFDA) Expanded Function Dental Auxiliary Practice Test

EFDA Anatomy and Occlusion 2