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Comparative adaptation accuracy of acrylic denture bases evaluated by two different methods
Chung-Jae Lee1, Sung-Bem Bok, Ji-Young Bae
1Department of Biomaterials Science, Dankook University, School of Dentistry, Cheonan, Korea.
Dental Materials Journal
|August 3, 2010
Summary
Fluid-resin (PERform) and Mak Press acrylic denture bases showed superior adaptation accuracy, with smaller gaps and less impression material needed. Other techniques yielded comparable results to traditional compression molding.
Area of Science:
- Dental Materials Science
- Prosthodontics
Background:
- Accurate denture base adaptation is crucial for patient comfort and function.
- Various processing techniques exist, each with potential impacts on fit.
Purpose of the Study:
- To compare the adaptation accuracy of acrylic denture bases processed by different methods.
- To evaluate fluid-resin, injection-molding, and compression-molding techniques.
Main Methods:
- Adaptation accuracy assessed via microscopy of posterior border gaps.
- Impression material weight (silicone) between denture base and master cast quantified.
- Correlation between gap measurement and material weight analyzed.
Main Results:
- PERform and Mak Press demonstrated significantly smaller maximum palatal gap dimensions.
- Mak Press showed significantly less automixed silicone material weight.
- SR-Ivocap and Success exhibited adaptation accuracy similar to compression-molding.
Conclusions:
- Fluid-resin and specific injection-molding techniques offer improved acrylic denture base adaptation.
- Material and mixing variables influence the correlation between gap size and impression material weight.
