Comparison of heat-cure acrylic resin processed by means of the conventional compression moulding versus the dry heat-high pressure processing technique
Date
1980
DOI
Authors
Hassaballa, Moustafa Abd-El Mequid
Version
OA Version
Citation
Abstract
Since the introduction of acrylic resin in dentistry, there has been a continual search for modified practices in processing the resins which will lead to improved qualities.
The objective of this investigation was to determine the feasibility of processing acrylic resin with a dry heat-high pressure processing technique and ascertain its limitations by comparing samples of three different heat-cure acrylic brands made in 1, 2, 3 mm thickness with those processed by conventional compression molding techniques.
Since the ultimate success or failure of a prosthesis depends on its fit, which is the reflection of its dimensional stability, and since all acrylics have the property of water sorption, which compensates partially or completely for the curing shrinkage, this investigation was designed to study the water sorption, dehydration, and porosity. These factors are also essentially properties for retaining a clean, hygenic prosthesis.
The results of this study indicated that the short curing time afforded by the dry heat-high pressure processing technique is extremely useful, and the quality of the acrylic resin produced is comparable to that produced by the more common compression molding technique. This indicates that the dry heat-high pressure can be used to rapidly process acrylic resin for complete or removable partial dentures, denture bases, and for maxilla-facial prosthetic devices.
The dry heat-high pressure is a valuable asset to the prosthetic laboratory.
Description
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Colored photographs included.
Thesis (M.Sc.D.)--Boston University, Henry M. Goldman School of Graduate Dentistry, 1980 (Prosthodontics)
Bibliography : leaves 77-79.
Colored photographs included.
Thesis (M.Sc.D.)--Boston University, Henry M. Goldman School of Graduate Dentistry, 1980 (Prosthodontics)
Bibliography : leaves 77-79.
License
This work is protected by copyright. Downloading is restricted to the BU community. If you are the author of this work and would like to make it publicly available, please contact open-help@bu.edu.