Lombardo, Geraldo H. L.Nishioka, Renato S. [UNESP]Souza, Rodrigo O. A.Michida, Silvia M. A. [UNESP]Kojima, Alberto N.Mesquita, Alfredo M. M.Buso, Leonardo2014-05-202014-05-202010-02-01Journal of Prosthodontics-implant Esthetic and Reconstructive Dentistry. Malden: Wiley-blackwell, v. 19, n. 2, p. 103-111, 2010.1059-941Xhttp://hdl.handle.net/11449/22808Purpose: To evaluate the influence of surface treatment on the shear bond strength between a Co-Cr alloy and two ceramics.Materials and Methods: Forty-eight metal cylinders were made (thickness: 4 mm, height: 3.7 mm) according ISO TR 11405. The 48 metallic cylinders were divided into four groups (n = 12), according to the veneering ceramic (StarLight Ceram and Duceram Kiss) and surface treatments: air-particle abrasion with Al(2)O(3) or tungsten drill (W). Gr1: StarLight + Al(2)O(3); Gr2: StarLight + W; Gr3: Duceram + Al(2)O(3); and Gr4: Duceram + W. The specimens were aged using thermal cycling (3000 x, 5 to 55 degrees C, dwell time: 30 seconds, transfer time: 2 seconds). The shear test was performed with a universal testing machine, using a load cell of 100 kg (speed: 0.5 mm/min) and a specific device. The bond strength data were analyzed using ANOVA and Tukey's test (5%), and the failure modes were analyzed using an optical microscope (30x).Results: The means and standard deviations of the shear bond strengths were (MPa): G1 (57.97 +/- 11.34); G2 (40.62 +/- 12.96); G3 (47.09 +/- 13.19); and G4 (36.80 +/- 8.86). Ceramic (p = 0.03252) and surface treatment (p = 0.0002) significantly affected the mean bond strength values.Conclusions: Air-particle abrasion with Al(2)O(3) improved the shear bond strength between metal and ceramics used.103-111engShear bond strengthmetal-ceramic systemsurface treatmentArtigo10.1111/j.1532-849X.2009.00546.xWOS:000290115200005Acesso restrito00566608422843970000-0002-1458-601X