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The dimensional accuracy of rectangular acrylic resin specimens cured by three denture base processing methods.

S Salim¹, S Sadamori, T Hamada

¹Department of Prosthetic Dentistry, Hiroshima University, School of Dentistry, Japan.

The Journal of Prosthetic Dentistry

|June 1, 1992

Summary

The SR-Ivocap system demonstrated superior dimensional accuracy in acrylic resin specimens compared to conventional and microwave curing methods. This suggests its potential for creating more precise denture bases.

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Area of Science:

Dental Materials Science
Prosthodontics
Polymer Science

Background:

Dimensional accuracy is crucial for denture base fabrication.
Acrylic resins are commonly used for denture bases.
Processing methods can influence the dimensional stability of acrylic resins.

Purpose of the Study:

To compare the dimensional accuracy of acrylic resin specimens processed by three different methods.
To evaluate the impact of conventional, SR-Ivocap, and microwave curing on dimensional stability.
To determine which method yields the most dimensionally accurate denture base.

Main Methods:

Rectangular acrylic resin specimens were fabricated using three distinct curing methods: conventional, SR-Ivocap system, and microwave curing.

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Dimensional accuracy was quantified by measuring the change in a distance vector (V) between fixed points on the specimens.

Statistical analysis was performed to compare dimensional changes between the groups (p < 0.05).

Main Results:

Specimens cured using the SR-Ivocap system exhibited significantly less dimensional change compared to those processed by conventional and microwave methods (p < 0.05).
The SR-Ivocap system demonstrated superior dimensional stability over the other two methods.
Conventional and microwave curing methods resulted in comparable, but greater, dimensional alterations.

Conclusions:

The SR-Ivocap system offers enhanced dimensional accuracy for acrylic resin processing.
This system holds potential for fabricating more precise and stable denture bases.
Clinicians should consider the SR-Ivocap system for improved outcomes in denture base construction.