A spacer that facilitates construction of implant-supported prostheses frameworks

Area of Science:

• Dental Prosthetics
• Biomaterials Science

Background:

• Fabricating implant-supported hybrid dentures requires precise framework construction.
• Achieving adequate space between the tissue and framework's inferior margin is crucial for optimal prosthesis fit and function.

Purpose of the Study:

• To describe a novel technique utilizing polyvinylsiloxane (PVS) putty impression material as a spacer in the pattern construction for implant-supported hybrid denture frameworks.
• To detail the advantages of using PVS putty for creating a standardized and adjustable spacer.

Main Methods:

• Polyvinylsiloxane (PVS) putty impression material was employed to create a spacer between the tissue and the inferior margin of the framework during pattern construction.
• The PVS spacer was easily retrieved from the cast, allowing for evaluation and adjustment of thickness and shape.
• The article also reviews fundamental framework construction aspects, including dimensions, acrylic retention, and passive fit.

Main Results:

• The PVS putty material proved easy to obtain, dimensionally stable, and readily shapeable, making it suitable for spacer fabrication.
• The technique facilitates the creation of a precisely shaped framework underside.
• The spacer serves as an effective matrix for maintaining denture tooth position during fabrication.

Conclusions:

• Polyvinylsiloxane (PVS) putty impression material is an effective and versatile material for creating spacers in implant-supported hybrid denture framework fabrication.
• This technique simplifies the process for dental technicians, ensuring accurate fit and standardized results.