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Microtensile bond strength of composite resin to human enamel prepared using erbium: Yttrium aluminum garnet laser
Author(s) -
Delfino Carina Sinclér,
SouzaZaroni Wanessa Christine,
Corona Silmara Aparecida Milori,
PalmaDibb Regina Guenka
Publication year - 2007
Publication title -
journal of biomedical materials research part a
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.849
H-Index - 150
eISSN - 1552-4965
pISSN - 1549-3296
DOI - 10.1002/jbm.a.30964
Subject(s) - materials science , bond strength , enamel paint , laser , adhesive , erbium , yttrium , composite material , composite number , universal testing machine , ultimate tensile strength , dentistry , doping , optics , metallurgy , optoelectronics , medicine , physics , layer (electronics) , oxide
The Erbium: Yttrium Aluminum Garnet (YAG) laser used for preparation of cavity can alter the substrate and it could influence the bond strength of enamel. The aim of this in vitro study was to evaluate the influence of Er:YAG laser's energy using microtensile bond test. Three groups were obtained (cavity preparation) and each group was divided into two subgroups (adhesive system). After that the adhesive protocol was performed, sections with a cross‐sectional area of 0.8 mm 2 (±0.2 mm 2 ) were obtained. The specimens were mounted in a universal testing machine (0.5 mm/min). Statistical analysis showed a decrease in bond strength for lased groups ( p < 0.01) and when the total‐etching adhesive system was used the laser 300 mJ subgroup showed higher bond strength compared to the laser 250 mJ ( p < 0.01). It was concluded that the cavities prepared using laser appear less receptive to adhesive procedures than conventional bur‐cut cavities. © 2006 Wiley Periodicals, Inc. J Biomed Mater Res, 2007