Effect of Dental Surface Treatment with Nd:YAG and Er:YAG Lasers on Bond Strength to Recently Bleached Dentin


Autoria(s): Gomes Torres, Carlos Rocha; Ferraz Caneppele, Taciana Marco; Quirino Sanches, Tatiane Caldas; Ribeiro, Carolina Ferraz; Borges, Alessandra Buhler
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

03/12/2014

03/12/2014

03/07/2014

Resumo

The objective of this study was to evaluate the effect of surface treatment with Er:YAG and Nd:YAG lasers on resin composite bond strength to recently bleached dentin. A total of 120 bovine incisors were distributed into two groups: C- without bleaching; and B- bleached with 35% hydrogen peroxide. Each group was divided into three subgroups: N- without laser treatment; Nd- Nd:YAG laser irradiation; and Er- Er:YAG laser irradiation. The adhesive system (Adper Single Bond 2) was applied and composite build-ups were constructed with Filtek Supreme (3M/ESPE). The teeth were sectioned to obtain dentin-resin sticks (1x1mm(2)) and tested by microtensile bond testing. The bond strength values in group B, subgroup N (16.1 +/- 3.5MPa) presented no significant difference compared with group B, subgroup Er (14.7 +/- 6.1MPa). Group C, subgroup N (26.8 +/- 7.4MPa) presented no significant difference compared with group B, subgroup Nd (28.8 +/- 5.6MPa). Group C, subgroup Nd (36.1 +/- 7.9MPa) presented a significant increase in bond strength compared with the other groups. The Er:YAG laser did not influence the bond strength of bleached specimens, and the use of the Nd:YAG laser on bleached specimens was able to reverse the immediate effects of bleaching, obtaining bond strength values similar to those of the control group.

Formato

585-595

Identificador

http://dx.doi.org/10.1080/00218464.2013.812036

Journal Of Adhesion. Abingdon: Taylor & Francis Ltd, v. 90, n. 7, p. 585-595, 2014.

0021-8464

http://hdl.handle.net/11449/112982

10.1080/00218464.2013.812036

WOS:000334040400002

Idioma(s)

eng

Publicador

Taylor & Francis Ltd

Relação

Journal of Adhesion

Direitos

closedAccess

Palavras-Chave #Composites #Fracture mechanisms #Dentistry #Adhesion by mechanical interlocking
Tipo

info:eu-repo/semantics/article