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A two-stage impression technique for custom facial prostheses
A J Coleman1, J W Schweiger, J Urquiola
1Department of Adult Restorative Dentistry, University of Nebraska, College of Dentistry, Lincoln.
The Journal of Prosthetic Dentistry
|April 1, 1995
Summary
This study presents a novel two-stage impression technique for facial prosthetics. The method uses polyvinyl siloxane and irreversible hydrocolloid for accurate tissue recording in an upright position, improving prosthetic fit.
Area of Science:
- Dental Materials Science
- Prosthodontics
- Biomedical Engineering
Background:
- Accurate impression techniques are crucial for fabricating well-fitting facial prostheses.
- Existing methods may suffer from distortion or patient discomfort.
- Recording maxillofacial tissues in a physiologically relevant state is challenging.
Purpose of the Study:
- To describe a new two-stage impression technique for facial prostheses.
- To achieve accurate tissue recording with minimal distortion.
- To improve the fabrication process of facial prosthetics.
Main Methods:
- Utilized a custom impression tray.
- Employed a two-stage impression process combining polyvinyl siloxane and irreversible hydrocolloid.
- Recorded tissues with the patient in an upright position and facial muscles at rest.
Main Results:
- The technique successfully recorded tissues with minimal distortion.
- Achieved high accuracy in capturing the details of the area to be contacted by the prosthesis.
- The procedure was found to be simple and effective.
Conclusions:
- The described two-stage impression technique offers a simple and accurate method for facial prosthesis fabrication.
- This technique overcomes limitations of previous impression methods.
- It ensures a more precise fit and potentially better patient outcomes.