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01-03-2010 | Original Article

Adhesives bonded to erbium:yttrium–aluminum–garnet laser-irradiated dentin: transmission electron microscopy, scanning electron microscopy and tensile bond strength analyses

Authors: Andreia Cristina Bastos Ramos, Marcella Esteves-Oliveira, Victor E. Arana-Chavez, Carlos de Paula Eduardo

Published in: Lasers in Medical Science | Issue 2/2010

Abstract

The aim of this in vitro study was to investigate the effect of erbium:yttrium–aluminum–garnet (Er:YAG) laser irradiation on dentinal collagen by transmission electron microscopy and to analyze the resin–dentin interface by scanning electron microscopy. A tensile bond strength test was also applied. Specimens from 69 sound human third molars were randomly divided into three groups: control (no laser), and two irradiated groups, laser 250 (250 mJ/2 Hz) and laser 400 (400 mJ/4 Hz). Then, specimens were restored with two adhesive systems, an etch-and-rinse or a self-etch system. Although ultrastructural examination showed a modified surface in the irradiated dentin, there was no statistical difference in bond strength values between the laser groups and controls (P < 0.05). In conclusion, the use of Er:YAG laser for ablating human dentin did not alter the main adhesion parameters when compared with those obtained by conventional methods, thus reinforcing its use in restorative dentistry.

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Title: Adhesives bonded to erbium:yttrium–aluminum–garnet laser-irradiated dentin: transmission electron microscopy, scanning electron microscopy and tensile bond strength analyses
Authors: Andreia Cristina Bastos Ramos
Marcella Esteves-Oliveira
Victor E. Arana-Chavez
Carlos de Paula Eduardo
Publication date: 01-03-2010
Publisher: Springer-Verlag
Published in: Lasers in Medical Science / Issue 2/2010
Print ISSN: 0268-8921
Electronic ISSN: 1435-604X
DOI: https://doi.org/10.1007/s10103-008-0600-0

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Adhesives bonded to erbium:yttrium–aluminum–garnet laser-irradiated dentin: transmission electron microscopy, scanning electron microscopy and tensile bond strength analyses

Abstract

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