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A selective-pressure impression technique for the edentulous maxilla.
Jacqueline P Duncan1, Sangeetha Raghavendra, Thomas D Taylor
1Department of Prosthodontics, University of Connecticut School of Dental Medicine, Farmington, CT 06030-1615, USA. jduncan@nso2.uchc.edu
The Journal of Prosthetic Dentistry
|September 3, 2004
Summary
A new selective-pressure impression technique improves denture fit for the edentulous maxilla. This method compensates for acrylic resin shrinkage, enhancing palatal adaptation of the final denture base.
Area of Science:
- Dental prosthetics
- Materials science in dentistry
Background:
- Heat-polymerized polymethyl methacrylate (PMMA) resins are widely used for denture bases.
- Polymerization shrinkage of PMMA can lead to poor adaptation and fit of dentures.
- The edentulous maxilla presents unique challenges for achieving optimal denture base adaptation.
Purpose of the Study:
- To introduce a novel selective-pressure impression technique for the edentulous maxilla.
- To address and compensate for the polymerization shrinkage of heat-polymerized PMMA resin.
- To improve the palatal adaptation of definitive denture bases.
Main Methods:
- A selective-pressure impression technique was developed and described.
- The technique aims to manage resin flow and adaptation during polymerization.
- Application in the context of complete denture fabrication for the edentulous maxilla.
Main Results:
- The described technique effectively compensates for polymerization shrinkage.
- Improved palatal adaptation of the denture base was achieved.
- The technique offers a method for enhanced denture fit.
Conclusions:
- The selective-pressure impression technique is a viable approach for improving denture base adaptation.
- This method offers a solution to the challenge of PMMA polymerization shrinkage.
- Enhanced palatal adaptation contributes to better functional and esthetic outcomes for complete dentures.