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Proceedings Paper

Evaluation of the tensile bond strength of an adhesive system self-etching in dentin irradiated with Er:YAG laser
Author(s): Andrea Malluf D. de Mello D.D.S.; Fabiano A. Sfier Mello D.D.S.; Edmir Matson; Adriana B. Mattos; Guilerme S. Mello
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Paper Abstract

Since Buonocore, several researchers have been seeking for the best adhesive system and treatment for the enamel and dentin surfaces. The use of the acid has been presented as one of the best techniques of dentin conditioning, because this promotes the removal of the 'smear layer' and exhibition of dentinal structure, for a best penetration and micro-retention of the adhesive system. However, some conditioning methods have been appearing in the literature, for the substitution or interaction with the acid substances, as the laser. The objective of this work is to evaluate the tensile bond strength of the adhesive system 'self-etching' associated to a composed resin, in dentin surfaces conditioned with the Er:YAG laser. For this study, freshly extracted human teeth were used and in each one the dentinal surfaces, which were treated with three sandpapers of different granulations to obtain a standard of the smear layer, before the irradiation of the laser and of the restoring procedure. After these procedures the specimens were storage in distilled water at 37 degrees for 24 hours. Soon after, they were submitted to the tensile strength test. After analyzing the results, we can conclude that the use of the Er:YAG laser can substitute the drill without the need of conditioning, when using the adhesive system 'self etching' in the dentinal surfaces because there was a decline in the strength of adhesion in the groups conditioned with the laser.

Paper Details

Date Published: 27 April 2001
PDF: 6 pages
Proc. SPIE 4249, Lasers in Dentistry VII, (27 April 2001); doi: 10.1117/12.424507
Show Author Affiliations
Andrea Malluf D. de Mello D.D.S., Univ. de Sao Paulo (Brazil)
Fabiano A. Sfier Mello D.D.S., Univ. de Sao Paulo (Brazil)
Edmir Matson, Univ. de Sao Paulo (Brazil)
Adriana B. Mattos, Univ. de Sao Paulo (Brazil)
Guilerme S. Mello, Pontificia Univ. Catolica do Parana (Brazil)

Published in SPIE Proceedings Vol. 4249:
Lasers in Dentistry VII
Peter Rechmann D.D.S.; Daniel Fried; Thomas Hennig, Editor(s)

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