AGD Prosthodontics: Fixed and Removable 2

Question 1

Which cement is most appropriate for final cementation of a metal-ceramic crown on a vital tooth with a short clinical crown?

Accepted Answer

Resin-modified glass ionomer

Answer

Resin-modified glass ionomer provides superior retention through adhesion and is biocompatible, making it ideal for vital teeth with limited retention form.

Question 2

A patient presents with a Kennedy Class II partial denture that has significant rocking movement. The most likely cause is:

Accepted Answer

Lack of indirect retainers

Answer

Indirect retainers placed anterior to the fulcrum line prevent rotational movement of distal-extension partial dentures under occlusal load.

Question 3

The biologic width in a healthy periodontium averages approximately:

Accepted Answer

2.04 mm

Answer

Biologic width comprises the junctional epithelium (~0.97 mm) and connective tissue attachment (~1.07 mm), averaging approximately 2.04 mm total.

Question 4

When fabricating a complete denture, the vertical dimension of occlusion is best evaluated by:

Accepted Answer

Using a combination of methods including physiologic rest position and phonetics

Answer

No single method is entirely reliable; combining rest position minus freeway space, phonetic tests, swallowing, and facial aesthetics provides the most accurate VDO.

Question 5

Which of the following clasp assemblies provides the most favorable stress distribution for a distal-extension removable partial denture?

Accepted Answer

RPI (rest, proximal plate, I-bar) clasp system

Answer

The RPI system allows the I-bar retainer to disengage and move gingivally under load, reducing torquing forces transmitted to the abutment tooth.

(AGD) Academy of General Dentistry Certification Practice Test

(AGD) Academy of General Dentistry Certification Practice Test

AGD Prosthodontics: Fixed and Removable 2