AGD Fixed and Removable Prosthodontics 4

Question 1

Which cementation agent provides the highest film thickness tolerance and is most biocompatible for cementing a final all-ceramic crown?

Accepted Answer

Resin-modified glass ionomer (RMGI)

Answer

Resin-modified glass ionomer cement offers fluoride release, adhesion to tooth structure, and acceptable biocompatibility with low solubility, making it suitable for all-ceramic restorations.

Question 2

When recording the centric relation (CR) for a complete denture patient, which technique minimizes muscle engrams and guides the condyles to their most superior, anterior, and medially seated position?

Accepted Answer

Bimanual manipulation (Dawson technique)

Answer

Dawson's bimanual manipulation guides both condyles simultaneously to a repeatable, musculoskeletally stable position, considered the most reliable method for recording CR.

Question 3

A patient reports that their new complete maxillary denture causes gagging. The most likely prosthodontic cause is:

Accepted Answer

Over-extension of the posterior palatal seal area

Answer

Over-extension beyond the vibrating line into the soft palate or a posterior border that is too thick stimulates the gag reflex.

Question 4

In fixed prosthodontics, the 'anti-rotation' feature of a preparation is most critical when designing restorations for which tooth?

Accepted Answer

Maxillary central incisor

Answer

Maxillary central incisors have a circular cross-section, making anti-rotation features (grooves, boxes) essential to prevent the crown from rotating on the prepared tooth.

Question 5

Which Kennedy classification describes an edentulous arch with bilateral posterior edentulous areas (distal extensions)?

Accepted Answer

Kennedy Class I

Answer

Kennedy Class I is defined as bilateral distal extension edentulous areas, requiring a tooth-and-tissue-supported RPD.

(AGD) Academy of General Dentistry Certification Practice Test

(AGD) Academy of General Dentistry Certification Practice Test

AGD Fixed and Removable Prosthodontics 4