| Full text | |
| Author(s): |
Carlos José Soares
[1]
;
Marcelo Giannini
[2]
;
Marcelo Tavares de Oliveira
[3]
;
Luis Alexandre Maffei Sartini Paulillo
[4]
;
Luis Roberto Marcondes Martins
[5]
Total Authors: 5
|
| Affiliation: | [1] Federal University of Uberlandia. Dental School. Department of Restorative Dentistry - Brasil
[2] University of Campinas. Piracicaba Dental School. Department of Restorative Dentistry - Brasil
[3] University of Campinas. Piracicaba Dental School. Department of Restorative Dentistry - Brasil
[4] University of Campinas. Piracicaba Dental School. Department of Restorative Dentistry - Brasil
[5] University of Campinas. Piracicaba Dental School. Department of Restorative Dentistry - Brasil
Total Affiliations: 5
|
| Document type: | Journal article |
| Source: | Journal of Applied Oral Science; v. 12, n. 1, p. 45-50, 2004-03-00. |
| Abstract | |
The purpose of this study was to evaluate the influence of different surface treatments on composite resin on the microtensile bond strength to a luting resin cement. Two laboratory composites for indirect restorations, Solidex and Targis, and a conventional composite, Filtek Z250, were tested. Forty-eight composite resin blocks (5.0 x 5.0 x 5.0mm) were incrementally manufactured, which were randomly divided into six groups, according to the surface treatments: 1- control, 600-grit SiC paper (C); 2- silane priming (SI); 3- sandblasting with 50 mm Al2O3 for 10s (SA); 4- etching with 10% hydrofluoric acid for 60 s (HF); 5- HF + SI; 6 - SA + SI. Composite blocks submitted to similar surface treatments were bonded together with the resin adhesive Single Bond and Rely X luting composite. A 500-g load was applied for 5 minutes and the samples were light-cured for 40s. The bonded blocks were serially sectioned into 3 slabs with 0.9mm of thickness perpendicularly to the bonded interface (n = 12). Slabs were trimmed to a dumbbell shape and tested in tension at 0.5mm/min. For all composites tested, the application of a silane primer after sandblasting provided the highest bond strength means. (AU) | |