Atsu, Saadet SağlamGelgör, İbrahim ErhanŞahin, Volkan2020-06-252020-06-252006Atsu, S. & Gelgor, İ.& Sahin, V. (2006). Effects of silica coating and silane surface conditioning on the bond strength of metal and ceramic brackets to enamel. The Angle orthodontist. 76. 857-62. 10.1043/0003-3219(2006)076[0857:EOSCAS]2.0.CO;2.0003-32191945-7103https://doi.org10.2319/052505-189https://hdl.handle.net/20.500.12587/3719Gelgor, I. Erhan/0000-0003-0859-9874Objective: To evaluate the effect of tribochemical silica coating and silane surface conditioning on the bond strength of metal and ceramic brackets bonded to enamel surfaces with light-cured composite resin. Materials and Methods: Twenty metal and 20 ceramic brackets were divided into four groups (n = 10 for each group). The specimens were randomly assigned to one of the following treatment conditions of the metal and ceramic brackets' surface: (1) tribochemical silica coating combined with silane and (2) no treatment. Brackets were bonded to the enamel surface on the labial and lingual sides of human maxillary premolars (20 total) with a light-polymerized resin composite. All specimens were stored in water for 1 week at 37 degrees C and then thermocycled (5000 cycles, 5 degrees C to 55 degrees C, 30 seconds). The shear bond strength values were measured on a universal testing machine. Student's t-test was used to compare the data (alpha = 0.05). The types of failures were observed using a stereomicroscope. Results: Metal and ceramic brackets treated with silica coating with silanization had significantly greater bond strength values (metal brackets: 14.2 +/- 1.7 MPa, P < .01; ceramic brackets: 25.9 +/- 4.4 MPa, P < .0001) than the control groups (metal brackets: 11.9 +/- 1.3 MPa; ceramic brackets: 15.6 +/- 4.2 MPa). Treated specimens of metal and ceramic exhibited cohesive failures in resin and adhesive failures at the enamel-adhesive interface, whereas control specimens showed mixed types of failures. Conclusions: Silica coating with aluminum trioxide particles coated with silica followed by silanization gave higher bond strengths in both metal and ceramic brackets than in the control group.eninfo:eu-repo/semantics/openAccesssilica coatingmetal and ceramic bracketsbond strengthArticle76585786210.2319/052505-1892-s2.0-3374857625317029522Q1WOS:000240792200019Q4