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Relationship between impression method of mucosa-borne area and denture pressure supportability
1Department of Complete Denture Prosthodontics, Tokyo Dental College, Japan.
The Bulletin of Tokyo Dental College
|February 1, 1993
Summary
Great-pressure impression techniques significantly enhance denture pressure supportability compared to slight-pressure or alginate methods. Optimal impression pressure for maximum supportability ranges from 0.83 to 2.48 kg/cm2.
Area of Science:
- Dentistry
- Prosthodontics
- Biomaterials
Background:
- Denture stability and patient comfort are influenced by pressure distribution.
- Current impression techniques vary in their ability to capture optimal tissue support.
Purpose of the Study:
- To investigate the relationship between impression pressure and denture pressure supportability.
- To determine the optimal impression pressure for enhanced denture performance.
Main Methods:
- Denture bases were fabricated using impressions taken under varying pressures.
- Pressure supportability was measured for each denture base.
- Optimal impression pressure was calculated based on occlusal and mucosal surface areas.
Main Results:
- Denture pressure supportability generally increased with higher impression pressure.
- Great-pressure impressions yielded 1.3–2.6 times higher supportability than slight-pressure impressions.
- Great-pressure impressions were superior to alginate impressions (1.2–1.8 times higher supportability).
Conclusions:
- Great-pressure impression techniques are clinically more effective for improving denture pressure supportability.
- Specific impression pressure ranges (0.83–2.48 kg/cm2) are associated with maximum supportability.
- This research informs the development of more rational and effective denture impression methods.