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Fixed and Removable Prosthodontics 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 Fixed and Removable Prosthodontics flashcards as text

  1. Which retention mechanism is used for an implant-retained overdenture that allows the most movement (stress-breaking) of the prosthesis?

    Answer: Ball-and-socket (stud) attachment

    Ball-and-socket (stud) attachments allow multi-axial movement, providing the most stress-breaking action compared to more rigid attachment designs.

  2. What is the most critical factor in determining the path of withdrawal for a fixed partial denture (bridge) with multiple abutments?

    Answer: Parallelism of abutment teeth

    All abutment teeth must be parallel to one another along the chosen path of withdrawal so the fixed bridge can seat and be removed as a single unit.

  3. A sanitary (hygienic) pontic design is contraindicated in which clinical situation?

    Answer: Anterior maxillary region where esthetics are critical

    Sanitary pontics leave a visible gap between the pontic and ridge, making them unacceptable in the anterior maxilla where esthetics demand tissue contact.

  4. Which type of rest seat preparation is required for a reciprocal clasp located on the lingual surface of a molar in an RPD?

    Answer: Lingual rest seat

    A lingual rest seat is prepared on the lingual surface of posterior teeth to support a lingual reciprocal arm and resist vertical displacement.

  5. When using a stock tray for a complete denture final impression, which modification is essential to achieve adequate peripheral extension?

    Answer: Adding border-molding material (compound or PVS) around the periphery

    Border molding establishes the functional width and depth of the vestibular periphery so the final impression accurately captures the denture-bearing area.

  6. A zirconia crown preparation requires how much occlusal reduction compared to a traditional porcelain-fused-to-metal (PFM) crown?

    Answer: Less reduction (1.0–1.5 mm) because zirconia is stronger

    Monolithic zirconia can achieve adequate strength with 1.0–1.5 mm of occlusal reduction due to its high fracture toughness, conserving more tooth structure than PFM.

  7. Which clinical sign most strongly suggests denture-induced fibrous hyperplasia (epulis fissuratum) in a complete denture wearer?

    Answer: Folds of hyperplastic tissue along the denture border in the vestibule

    Epulis fissuratum presents as folds of fibrous hyperplastic tissue in the vestibule caused by chronic irritation from an ill-fitting denture flange.