INBDE Prosthodontics and Occlusion 2

Question 1

Which of the following is a contraindication to implant placement?

Accepted Answer

History of radiation to the head and neck

Answer

Prior radiation therapy to the head and neck significantly compromises bone vascularity and healing, increasing the risk of osteoradionecrosis and implant failure.

Question 2

The neutral zone in complete denture construction represents:

Accepted Answer

The area where buccal and lingual muscle forces are in equilibrium

Answer

The neutral zone is the area in the edentulous mouth where the outward tongue pressure equals the inward cheek and lip pressure, providing the ideal location for artificial teeth.

Question 3

Osseointegration of a dental implant refers to:

Accepted Answer

Direct structural and functional connection between bone and the implant surface

Answer

Osseointegration is the direct bone-to-implant contact without an intervening fibrous layer, providing the rigid anchorage that dental implants depend upon.

Question 4

The Christensen phenomenon describes:

Accepted Answer

The development of a posterior open bite in protrusive movement with balanced occlusion dentures

Answer

The Christensen phenomenon is the opening of a wedge-shaped space posteriorly during protrusive movement in complete dentures without balanced occlusion.

Question 5

Fixed partial denture (bridge) pontic designs should ideally contact the residual ridge:

Accepted Answer

With light contact that can be cleansed (modified ridge lap or ovate)

Answer

The modified ridge lap and ovate pontic designs provide acceptable aesthetics with light tissue contact that can be cleaned, balancing appearance and hygiene.

INBDE - Integrated National Board Dental Exam Practice Test

INBDE - Integrated National Board Dental Exam Practice Test

INBDE Prosthodontics and Occlusion 2