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Tensile strength of five types of retention for resin-bonded prostheses
M T Bastos1, J Mondelli, A Ishikiriama
1Department of Operative Dentistry, University of São Paulo, Dental School of Bauru, Brazil.
Abstract:
The tensile bond strengths of five retention techniques for bonded cast restorations were tested. The retentive methods were the electrolytic etch, Rochette's perforations, retention beads, the recessed surface, and soldered orthodontic mesh. The electrolytic etch and recessed surface methods gave the highest values of bond strength, followed by retention beads. Rochette's perforations and the soldered orthodontic mesh failed to surpass the bond strength of the control group (no additional retention) after 1 hour and provided the lowest bond strength after 24 hours.
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