Marginal leakage of class V cavity preparations

Dentin-bonding materials, ferric oxylate (FO), addition reaction between N-phenylglycine and glycidyl methacrylate (NPG-GMA), and addition reaction product of pyromellitic acid dianhydride and 2-hydroxyethyl methacrylate (PMDM), were tested together for their ability to inhibit marginal leakage in C...

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Bibliographic Details
Published inJournal of biomedical materials research Vol. 18; no. 7; p. 809
Main Authors Dumsha, T C, Biron, G
Format Journal Article
LanguageEnglish
Published United States 01.09.1984
Subjects
Composite Resins - analysis
Dental Cavity Preparation
Dental Enamel - analysis
Dentin - analysis
Humans
In Vitro Techniques
Silver
Staining and Labeling
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Summary:Dentin-bonding materials, ferric oxylate (FO), addition reaction between N-phenylglycine and glycidyl methacrylate (NPG-GMA), and addition reaction product of pyromellitic acid dianhydride and 2-hydroxyethyl methacrylate (PMDM), were tested together for their ability to inhibit marginal leakage in Class V composite restorations in vitro. Sixteen experimental teeth were pretreated with FO, NPG-GMA, PMDM, and restored with composite. Sixteen control teeth were treated conventionally with composite. The teeth were then thermally cycled (5 and 55 degrees C) for 7 days, silver stained, and evaluated blindly for degree of marginal leakage on a scale of 0 (no leakage) to 7 (leakage into the pulp). The experimental group displayed significantly greater leakage values (p less than 0.01) than controls. The results of this study support the hypothesis that FO, NPG-GMA, and PMDM, together with composite inhibit marginal leakage.
ISSN:0021-9304
DOI:10.1002/jbm.820180711