Effect of bonding and cavity outline on microleakage of posterior composite in primary teeth
Date
1985
DOI
Authors
Alhomaidah, Sager
Version
OA Version
Citation
Abstract
The objective of this study is to test the effect of cavity outline and bonding on leakage in posterior deciduous teeth when composite is used as a filling material. The hypothesis is that a modification of the classic cavity preparation design is necessary, so as to achieve improved sealing properties beside the esthetic result. Comparing microleakage in the modified design vs. conventional cavity preparation under different bonding methods and thermal cycling should provide an indication of the feasibility of using composites in posterior deciduous teeth.
Many reports deal with the problem involving the adaptation of modern restorative material to tooth structure.
Although composites have been used for some years, the cavity preparation principle remained largely unaltered despite the fact that the physical properties of composite resins differ from those of amalgam. The cavity design may be an important cause of failure of composite resin class II restoration in primary teeth. Restorative resins may shrink during polymerization and open a small gap between the restoration and the cavity wall. This may be a major cause for marginal leakage. Perhaps a modification of the class II cavity preparation will solve this problem.
The significance of this study is that it may introduce a modified cavity design which could assist in reducing the microleakage of class II composite restorations in primary teeth.
Description
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Thesis (MSD) --Boston University School of Graduate Dentistry, 1985 (Pedodontics).
Includes bibliographic references: leaves 39-50.
Thesis (MSD) --Boston University School of Graduate Dentistry, 1985 (Pedodontics).
Includes bibliographic references: leaves 39-50.
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.