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Evaluation of new methods for composite repair

Authors
Journal
Dental Materials
0109-5641
Publisher
Elsevier
Publication Date
Volume
8
Issue
6
Identifiers
DOI: 10.1016/0109-5641(92)90020-d

Abstract

Abstract This study evaluated the effectiveness of air abrasion (sandblasting), hydrofluoric acid (HF) etching, and acidulated phosphate fluoride (APF) for composite repair. Five different composite (three hybrids, one small-particle, and one microfill) were used to test the effects of different compositions and particle sizes. A phosphonate resin bonding agent was used for all repair procedures. In general, air abrasion provided the strongest repairs, approximately 60% of cohesive strength. The effect of HF varied with different composites, either improving or reducing the repair strength. APF gave the lowest interfacial bond strengths for all composites except the microfill.

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