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Shear bond strength of self-etching adhesive systems to Er: YAG-laser-prepared dentin

Abstract : This study was conducted to compare the shear bond strengths of composite resin bonded to Er:YAG laser or bur-prepared dentin surfaces using three self-etching adhesive systems. The occlusal surfaces of 120 human third molars were ground flat to expose dentin. The dentin was prepared using either a carbide bur or an Er:YAG laser at 350 mJ/pulse and 10 Hz (fluence, 44.5 J/cm2). Three different self-etching adhesive systems were applied: iBond™, Xeno III™ and Clearfil SE Bond™. Rods of composite resin were bonded to dentin surfaces and shear bond tests were carried out. Both dentin surfaces after debonding and resin rods were observed using a scanning electron microscope. When the Xeno III™ was used, no difference was observed on shear bond strength values when bur and Er:YAG laser were compared. When using iBond™ and Clearfil SE Bond™, bond strength values measured on Er:YAG-laser-prepared surfaces were lower than those observed on bur-prepared surfaces. The absence of smear layer formation during the preparation of the dentin by the Er:YAG laser did not improve the adhesion values of self-etching adhesive systems.
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Submitted on : Tuesday, August 3, 2010 - 2:42:36 PM
Last modification on : Thursday, August 4, 2022 - 4:54:39 PM

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Nathalie Brulat, Jean-Paul Rocca, Eric Leforestier, Gilbert Fiorucci, Samir Nammour, et al.. Shear bond strength of self-etching adhesive systems to Er: YAG-laser-prepared dentin. Lasers in Medical Science, Springer Verlag, 2009, 24 (1), pp.Pages 53-57. ⟨10.1007/s10103-007-0519-x⟩. ⟨hal-00508390⟩



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