Repair of composites: Effect of laser and different surface treatments


Autoria(s): Barcellos, Daphne C.; Santos, Vivian M. Miyazaki; Niu, Li-Na; Pashley, David H.; Tay, Franklin R.; Pucci, Cesar R.
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

21/10/2015

21/10/2015

01/06/2015

Resumo

Objectives: This study investigated the repairs of resin composite restorations after using different surface treatments.Design: Eighty four truncated cones of Filtek Z350 were prepared and thermo-cycled (20,000 cycles). Surfaces were roughened with diamond bur and etched with 37% phosphoric acid. Those cones were divided into 7 groups (N=12): 1) Prime&Bond 2.1; 2) aluminum oxide sandblasting+Prime&Bond 2.1; 3) Er:YAG laser treatment+Prime&Bond 2.1; 4) 9.6% hydrofluoric acid for 2 min-Fsilane coupling agent.; 5) silane coupling agent; 6) auto-polymerized acrylic monomer+Prime&Bond 2.1; 7) Adper Scothbond SE. Teflon device was used to fabricate inverted truncated cones of repair composite over the surface-treated. The bonded specimens were stressed to failure under tension. The data were analyzed with oneway ANOVA and Tukey tests.Results: Mean repair strengths (SD, in MPa) were, Group-2: 18.8a; Group-1: 18.7a; Group-6: 13.4ab; Group-7: 9.5bc; Group-3: 7.5bcd; Group-4: 5.2cd; Group-5: 2.6d.Conclusions: The use of diamond bur and a conventional adhesive and the use of aluminum oxide sandblasting prior to adhesive provided a simple and cost-effective solutions to composite repair. Er:YAG laser, silane alone, 9.6% hydrofluoric acid plus silane or a self-etching adhesive results in inferior composite repair strengths. (C) 2015 Elsevier Ltd. All rights reserved.

Formato

1-6

Identificador

http://www.sciencedirect.com/science/article/pii/S0143749615000093

International Journal Of Adhesion And Adhesives, v. 59, p. 1-6, 2015.

0143-7496

http://hdl.handle.net/11449/128919

http://dx.doi.org/10.1016/j.ijadhadh.2015.01.008

WOS:000353006100001

Idioma(s)

eng

Publicador

Elsevier B.V.

Relação

International Journal Of Adhesion And Adhesives

Direitos

closedAccess

Palavras-Chave #Composite resin repair #Nanofilled composite resin #Laser #Silica coating #Silane
Tipo

info:eu-repo/semantics/article