NDEB Dental Anatomy and Occlusion 2

Question 1

In Angle Class I occlusion, the mesiobuccal cusp of the maxillary first molar occludes in the:

Accepted Answer

Buccal groove of the mandibular first molar

Answer

Angle Class I is defined by the mesiobuccal cusp of the maxillary first molar occluding in the buccal groove of the mandibular first molar.

Question 2

Centric relation is best described as:

Accepted Answer

The position where the condyles are in their most superior-anterior position against the articular eminences

Answer

Centric relation is a reproducible, load-bearing jaw position where the condyles and discs are seated in the most superior-anterior position against the articular eminences.

Question 3

Bennett movement is defined as:

Accepted Answer

The bodily lateral shift of the mandible toward the working side during lateral excursion

Answer

Bennett movement is the bodily lateral translation of the entire mandible toward the working side that occurs during lateral excursion.

Question 4

During lateral excursion of the mandible, the non-working (balancing) side condyle moves:

Accepted Answer

Downward, forward, and medially

Answer

The non-working side condyle orbits downward, forward, and medially along the articular eminence during lateral mandibular excursion.

Question 5

Canine-protected occlusion (canine guidance) is characterized by:

Accepted Answer

The canine discluding all posterior teeth during lateral excursions

Answer

In canine guidance, the contacting canines during lateral excursion create disclusion (separation) of all posterior teeth, reducing harmful lateral forces on the posterior dentition.

NDEB - National Dental Examining Board Practice Test

NDEB - National Dental Examining Board Practice Test

NDEB Dental Anatomy and Occlusion 2