Evaluation of shear bond strength of composite to porcelain according to surface treatment.
This study evaluated the shear bond strength of porcelain/composite using 40 metal + porcelain + composite cylindrical specimens divided into 4 groups, according to porcelain surface treatment: 1) no treatment, 2) mechanical retentions performed with diamond burs, 3) etching with phosphoric acid+silane, and 4) etching with hydrofluoric acid+silane. After being stored in distilled water at room temperature for one week, the specimens were submitted to a shear force (load) and the data were analyzed statistically (ANOVA). The means (in Mpa) of the groups were: 4.71 (group 1); 4.81 (group 2); 11.76 (group 3); 11.07 (group 4). There were no statistically significant differences between groups 1 and 2 and between groups 3 and 4.
Kussano
Claudia Minami
CM
Prosthodontics Department, Hospital for Rehabilitation of Craniofacial Anomalies, University of São Paulo, Bauru, SP, Brazil. claudiamk@terra.com.br
Bonfante
Gerson
G
Batista
José Gilmar
JG
Pinto
João Henrique Nogueira
JH
D000134:Acid Etching, Dental; D003188:Composite Resins; D001840:Dental Bonding; D003776:Dental Porcelain; D017269:Dental Prosthesis Repair / Q000379:methods*; D003799:Dental Stress Analysis; D008422:Materials Testing; D033081:Shear Strength; D012821:Silanes; D013499:Surface Properties
D003188:Composite Resins; D012821:Silanes; D003776:Dental Porcelain