Prosthodontics: Fixed and Removable Flashcards
7 cards from real AGD practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Prosthodontics: Fixed and Removable flashcards as text
When preparing a tooth for a full-coverage metal-ceramic crown, the recommended axial reduction on the facial surface is:
Answer: 1.2–1.5 mm
Facial reduction of 1.2–1.5 mm is required for porcelain-fused-to-metal crowns to provide adequate space for the metal substructure and overlying ceramic layer.
A patient's maxillary complete denture has a high-pitched whistling sound during the 'S' sound. This indicates:
Answer: The closest speaking space is insufficient
A whistling sibilant 'S' sound indicates the anterior teeth are too close together, leaving insufficient speaking space for air to flow correctly.
Which impression technique is most appropriate for a patient with a severely resorbed mandibular ridge for complete denture fabrication?
Answer: Custom tray with selective pressure technique
A custom tray with selective pressure (mucocompressive in stress-bearing areas, mucostatic elsewhere) maximizes stability and support over resorbed ridges.
Posterior cantilever fixed partial dentures are contraindicated primarily because:
Answer: They create excessive torquing forces on the abutment tooth
Cantilever FPDs create lever-arm forces that apply torque and tipping moments to abutment teeth, risking periodontal damage and restoration failure.
A patient with a Kennedy Class I removable partial denture reports that the denture drops during swallowing. The most appropriate adjustment is to:
Answer: Adjust the border extensions in the distal flange area
Overextended posterior flanges interfere with the action of the pterygomandibular raphe and buccinator muscle, causing the denture to unseat during swallowing.
The most critical factor in the long-term success of a fixed partial denture with a pier abutment (middle abutment) is:
Answer: Incorporating a non-rigid connector at one end
A non-rigid connector at the distal aspect of the middle abutment allows independent movement and prevents differential tooth movement from dislodging the retainer.
Which occlusal scheme is most appropriate for a patient with a complete maxillary denture opposing natural mandibular teeth?
Answer: Monoplane (flat plane) occlusion
Monoplane occlusion with no cuspal inclines minimizes horizontal forces transmitted to the maxillary denture when opposing natural teeth with fixed proprioception.