Effect of dental surface treatment with Nd:YAG and Er: YAG lasers on bond strength of resin composite to recently bleached enamel
- نوع فایل : کتاب
- زبان : انگلیسی
- مؤلف : Carlos Rocha Gomes Torres & Taciana Marco Ferraz Caneppele & Regina Del Moral de Lazari & Carolina Ferraz Ribeiro & Alessandra Buhler Borges
- چاپ و سال / کشور: 2011
Description
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.
Lasers Med Sci DOI 10.1007/s10103-011-0946-6 Received: 18 November 2010 / Accepted: 8 June 2011
