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Effect of dental surface treatment with Nd:YAG and Er:YAG lasers on bond strength of resin composite to recently bleached enamel

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Abstract

The aim of this work is to evaluate the effect of surface treatment with Er:YAG and Nd:YAG lasers on resin composite bond strength to recently bleached enamel. In this study, 120 bovine incisors were distributed into two groups: group C: without bleaching treatment; group B: bleached with 35% hydrogen peroxide. Each group was divided into three subgroups: subgroup N: without laser treatment; subgroup Nd: irradiation with Nd:YAG laser; subgroup Er: irradiation with Er:YAG laser. The adhesive system (Adper Single Bond 2) was then applied and composite buildups were constructed with Filtek Supreme composite. The teeth were sectioned to obtain enamel-resin sticks (1 × 1 mm) and submitted to microtensile bond testing. The data were statistically analyzed by the ANOVA and Tukey tests. The bond strength values in the bleached control group (5.57 MPa) presented a significant difference in comparison to the group bleached and irradiated with Er:YAG laser (13.18 MPa) or Nd:YAG (25.67 MPa). The non-bleached control group presented mean values of 30.92 MPa, with statistical difference of all the others groups. The use of Nd:YAG and Er:YAG lasers on bleached specimens was able to improve the bond strengths of them.

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Authors and Affiliations

  1. São José dos Campos Dental School, São Paulo State University, São Paulo, Brazil

    Carlos Rocha Gomes Torres, Taciana Marco Ferraz Caneppele, Regina Del Moral de Lazari, Carolina Ferraz Ribeiro & Alessandra Buhler Borges

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  1. Carlos Rocha Gomes Torres
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  2. Taciana Marco Ferraz Caneppele
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  3. Regina Del Moral de Lazari
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  4. Carolina Ferraz Ribeiro
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  5. Alessandra Buhler Borges
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Correspondence to Taciana Marco Ferraz Caneppele.

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Torres, C.R.G., Caneppele, T.M.F., Del Moral de Lazari, R. et al. Effect of dental surface treatment with Nd:YAG and Er:YAG lasers on bond strength of resin composite to recently bleached enamel. Lasers Med Sci 27, 755–760 (2012). https://doi.org/10.1007/s10103-011-0946-6

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  • DOI: https://doi.org/10.1007/s10103-011-0946-6

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