Prosthetic Restoration Flashcards

The 'pink esthetic score' (PES) and 'white esthetic score' (WES) are used to evaluate:

Answer: Soft tissue and crown esthetics respectively around anterior implant restorations

PES evaluates peri-implant soft tissue esthetics while WES assesses the visible crown esthetics — together they provide a comprehensive esthetic outcome score.

Cantilever extensions on implant-supported fixed prostheses should be limited to reduce:

Answer: Bending moments and stress concentration at the most distal implant

Cantilever length creates bending stress that multiplies at the distal implant; excessive cantilevers can cause screw loosening, fracture, and bone loss.

When converting a patient's existing denture to an implant overdenture, which step is critical?

Answer: Ensuring the denture has adequate retention and space for attachment housings

The existing denture must be evaluated for adequate thickness, retention space, and structural integrity before retrofitting attachment housings.

The passive fit of an implant framework means:

Answer: The framework seats on all implants simultaneously without introducing internal stress

A passively fitting framework contacts all implants simultaneously without pre-loading any implant or abutment — internal stress causes screw fracture and bone loss.

Implant-retained restorations require patients to use which hygiene aid most specifically designed for implant maintenance?

Answer: Interdental brushes and water flossers/irrigators

Interdental brushes and water irrigators effectively clean around implant abutments and under implant bridges where standard floss cannot reach.

The ideal implant crown to implant ratio (crown height to implant length) should ideally be:

Answer: 1:1 or less for optimal force distribution

A crown-to-implant ratio of 1:1 or less ensures that bending moments from lateral forces are kept within the bone-implant interface's tolerance.