INBDE Prosthodontics and Occlusion

Question 1

Centric relation (CR) is best defined as:

Accepted Answer

The most superior, anterior position of the condyles in the glenoid fossae

Answer

Centric relation is the maxillomandibular relationship in which the condyles are in their most superior (and slightly anterior) position in the glenoid fossae, independent of tooth contact.

Question 2

Canine-protected occlusion refers to:

Accepted Answer

The canines bearing all lateral excursive contacts while posterior teeth disclude

Answer

In canine-protected (mutually protected) occlusion, the canines bear and guide all lateral excursive forces, allowing the posterior teeth to disclude and be protected from lateral forces.

Question 3

The Bonwill triangle in prosthodontics represents:

Accepted Answer

The relationship between condyles and the incisors forming an equilateral triangle

Answer

Bonwill's triangle is an equilateral triangle with 4-inch sides connecting the two condyles and the mesial contact point of the mandibular central incisors.

Question 4

A facebow transfer records the relationship of:

Accepted Answer

Maxillary arch to the transverse hinge axis of the condyles

Answer

A facebow records the spatial relationship of the maxillary arch to the opening axis of the condyles (transverse hinge axis), allowing accurate mounting on an articulator.

Question 5

The closest speaking space refers to:

Accepted Answer

The closest vertical relationship of upper and lower teeth during speech

Answer

The closest speaking space (1–2 mm) is the minimum distance between maxillary and mandibular teeth observed during phonation of sibilant sounds like 's'.

INBDE - Integrated National Board Dental Exam Practice Test

INBDE - Integrated National Board Dental Exam Practice Test

INBDE Prosthodontics and Occlusion