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Adaptation of a visible light-cured denture base material
H K Tan1, J S Brudvik, J I Nicholls
1Department of Prosthodontics, University of Washington, School of Dentistry, Seattle.
The Journal of Prosthetic Dentistry
|March 1, 1989
Summary
Using the Triad light-cured resin system for record bases requires specific techniques. Employing a dry dental cast and vacuum-assisted adaptation significantly reduces internal voids and defects, improving the final product for special patients.
Area of Science:
- Dental Materials Science
- Prosthodontics
Background:
- The Triad light-cured resin system is a potential material for fabricating custom record bases.
- Close adaptation to dental casts can lead to internal voids and defects, compromising the quality of record bases.
Purpose of the Study:
- To evaluate methods for improving the adaptation and reducing defects when using the Triad system for record bases.
Main Methods:
- Investigated the effect of cast moisture content (dry vs. moist) on adaptation.
- Assessed the efficacy of vacuum-assisted adaptation using a rubber dam and vacuum adaptor.
- Compared these methods to manual finger pressure adaptation.
Main Results:
- Using a dry dental cast significantly reduced internal voids and defects compared to a moist cast.
- Vacuum-assisted adaptation resulted in an improved internal surface quality.
- Finger pressure alone proved to be an unreliable method for achieving adequate adaptation.
Conclusions:
- Dry casts and vacuum-assisted adaptation are crucial for minimizing defects in Triad resin record bases.
- These techniques enhance the clinical suitability of processed record bases for special patient needs.