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

Lasers in Medical Science
Andreia Cristina Bastos RamosCarlos de Paula Eduardo

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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Citations

Sep 20, 2011·Photomedicine and Laser Surgery·Adriana Oliveira CarvalhoMarcelo Giannini
Jan 29, 2013·Lasers in Medical Science·Thaysa Monteiro RamosCarlos de Paula Eduardo
Feb 8, 2011·Lasers in Medical Science·Simon FluryAdrian Lussi
Jul 24, 2012·Lasers in Medical Science·A Rüya YaziciThomas Mang
Apr 9, 2011·Dental Clinics of North America·Adriana P MansoRicardo M Carvalho
Apr 2, 2015·Microscopy Research and Technique·Lívia Tosi TrevelinAdriana Bona Matos
Aug 1, 2015·Photomedicine and Laser Surgery·Raquel Marianna LopesAna Cecília Corrêa Aranha
Aug 21, 2013·Lasers in Medical Science·Min-le ChenQian-Zhou Jiang
Feb 15, 2019·Lasers in Medical Science·Livia Tosi TrevelinAdriana Bona Matos
May 8, 2013·Lasers in Medical Science·Thaysa Monteiro RamosCarlos de Paula Eduardo

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