The effect of a 3-methacryloxypropyltrimethoxysilane and vinyltriisopropoxysilane blend and tris(3-trimethoxysilylpropyl)isocyanurate on the shear bond strength of composite resin to titanium metal

摘要: Abstract Objectives. The aim of this study was to evaluate the reactions silanes prior attaching composite titanium and these as coupling agents. Veneered may be used a prosthetic material. Methods. Two silane solutions, mixture both γ-methacryloxypropyltrimethoxysilane vinyltriisopropoxysilane, tris(3-trimethoxysilylpropyl)isocyanurate were prepared 2 wt% in two different (95% 2-propanol 90% acetone) solutions. A control, These six solutions applied onto flat surfaces. samples (N=250) divided into main groups: air-dried (room temperature) heat cured for 1 h at 110 °C. Sinfony® veneering light-cured on titanium. control group non-silanized. specimens assigned subgroups: not thermocycled, thermocycled (5000 cycles, 5–55 °C). Shear bond strength tested crosshead speed 1.0 mm min−1. Fresh solution hydrolysis, condensation reaction surface monitored by FTIR spectrometry. Results. Dry could successfully tested, while thermocycling after 3700 cycles had gradually de-bonded from silanized substrate. For dry samples, statistical analysis (ANOVA) showed that solvent significantly affected shear strength. reacted room temperature yielded 11.3 MPa (Standard deviation, SD, 3.6 MPa) other hand, 10.7 (SD 8.0 20.4 12.2 MPa). Non-silanized 4.8 2.1 Significance. In all solvents used, chemically with covalent Si–O–Ti– –Si–O–Si– bonds evident.