NBDE Dental Anatomy and Occlusion 4

Question 1

In Angle's Class II, Division 2 malocclusion, the maxillary central incisors are characteristically:

Accepted Answer

Retroclined with a deep overbite

Answer

Class II, Division 2 is characterized by retroclination (lingual tipping) of the maxillary central incisors and an increased deep overbite.

Question 2

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

Accepted Answer

Distobuccal and mesiolingual cusps

Answer

The oblique ridge on the maxillary first molar is a transverse ridge connecting the distobuccal and mesiolingual cusps diagonally across the occlusal surface.

Question 3

The Bennett movement refers to:

Accepted Answer

The lateral bodily shift of the mandible toward the working side

Answer

Bennett movement is the lateral bodily shift of the entire mandible toward the working side during lateral excursion.

Question 4

Which tooth is most commonly congenitally missing (excluding third molars)?

Accepted Answer

Mandibular second premolar

Answer

Excluding third molars, the mandibular second premolar has the highest prevalence of congenital absence (hypodontia).

Question 5

The term 'intercuspation' refers to:

Accepted Answer

The fitting together of upper and lower cusp tips in occlusion

Answer

Intercuspation describes the occlusal relationship where opposing cusp tips, ridges, and fossae fit together when the teeth are in contact.

NBDE - National Board Dental Examination Practice Test

NBDE - National Board Dental Examination Practice Test

NBDE Dental Anatomy and Occlusion 4