FREE AGD Fixed and Removable Prosthodontics Questions and Answers

Question 1

Which of the following features of a full coverage crown preparation is most influential in providing resistance to dislodgement from tipping forces directed obliquely to the path of insertion?

Accepted Answer

Axial wall height of 4mm or greater.

Answer

Occlusal reduction providing 2mm of clearance.

Answer

A heavy chamfer margin of 1.2mm.

Answer

A total occlusal convergence of 6 degrees.

Question 2

A patient presents for a new mandibular removable partial denture (RPD) to replace teeth #19 and #30. The most posterior teeth in the arch are now #21 and #28. This is a Kennedy Class I situation. What is the primary function of placing rests on the mesial-occlusal surface of tooth #22 and the distal-occlusal surface of tooth #27?

Accepted Answer

To provide indirect retention against lifting of the distal extensions.

Answer

To provide reciprocation for the direct retainers.

Answer

To act as the primary vertical stops for the prosthesis.

Answer

To guide the path of insertion and removal of the RPD.

Question 3

When designing a pontic for a fixed partial denture in the maxillary anterior region where esthetics and hygiene are both high priorities, which pontic design is generally considered the most appropriate choice?

Accepted Answer

Modified Ridge-Lap

Answer

Sanitary (Hygienic)

Answer

Saddle (Ridge-Lap)

Answer

Ovate

Question 4

A patient with new complete dentures complains that their teeth make a distinct 'clicking' sound when they are speaking. This clinical finding is most commonly associated with which of the following errors?

Accepted Answer

Excessive vertical dimension of occlusion (VDO).

Answer

Incorrect centric relation record.

Answer

Use of acrylic teeth instead of porcelain teeth.

Answer

Inadequate posterior palatal seal.

Question 5

Which of the following luting agents provides its strongest and most durable bond to tooth structure primarily through micromechanical interlocking after acid etching and requires a multi-step application protocol?

Accepted Answer

Adhesive Resin Cement

Answer

Resin-Modified Glass Ionomer (RMGI) Cement

Answer

Zinc Phosphate Cement

Answer

Polycarboxylate Cement

Question 6

A patient requires a Kennedy Class III removable partial denture to replace missing teeth #19 and #20. The design includes a mesial-occlusal rest on tooth #21 and a distal-occlusal rest on tooth #18. What is the primary purpose of these rests?

Accepted Answer

To provide vertical support against occlusal forces.

Answer

To provide indirect retention for the prosthesis.

Answer

To provide reciprocation against the retentive clasps.

Answer

To enhance the esthetics by closing small gaps.