ADC ADC - Australian Dental Council Dental Anatomy and Occlusion Questions and Answers

Question 1

How many cusps does a maxillary first molar typically have?

Accepted Answer

4

Answer

The maxillary first molar typically has 4 major cusps: mesiobuccal, distobuccal, mesiolingual, and distolingual.

Question 2

Which tooth is known as the 'cornerstone' of the dental arch?

Accepted Answer

Canine

Answer

The canine is called the cornerstone of the dental arch because it is located at the corner of the arch and plays a key role in guiding occlusion.

Question 3

In Angle's Class II malocclusion, the mesiobuccal cusp of the maxillary first molar occludes:

Accepted Answer

Mesial to the buccal groove of the mandibular first molar

Answer

In Class II malocclusion, the mandibular arch is positioned distally, so the mesiobuccal cusp of the upper first molar occludes mesial to the buccal groove of the lower first molar.

Question 4

The Curve of Spee is a curvature observed in which plane?

Accepted Answer

Sagittal plane

Answer

The Curve of Spee is an anteroposterior (sagittal) curvature of the occlusal plane following the buccal cusps of mandibular posterior teeth.

Question 5

Which structure forms the primary reference point for determining the vertical dimension of occlusion?

Accepted Answer

The occlusal plane

Answer

The occlusal plane is the primary clinical reference used to assess and re-establish vertical dimension of occlusion.

ADC - Australian Dental Council Practice Test

ADC - Australian Dental Council Practice Test

ADC ADC - Australian Dental Council Dental Anatomy and Occlusion Questions and Answers