PENGARUH PENAMBAHAN SILANE DAN IMPREGNASI FIBER TERHADAP KEKUATAN TARIK FIBER REINFORCED COMPOSITE E-GLASS SEBAGAI RETAINER ORTODONSI

Fiber reinforced composite (FRC) in dentistry is as an orthodontic retainer. However, there is a limitation of FRC for this application that is a fracture due to a weak bonding between fibers and matrixs. The purpose of this study was to evaluate the effect of silane and impregnation of fibers on the tensile strength of E-glass FRC. This study used an impregnated E-glass fiber (everStick®ORTHO, Stick Tech Ltd), a non-impregnated E-glass fiber (Ahlstrom Fiberglass R338-2400/V/P®), a composite flowable matrixs (Tetric Flow Chroma, Ivoclar Vivadent) and a MPS silane (Monobond's, Ivoclar Vivadent). This study consisted of two group: an impregnated fiber (original, 1x addition of silane, 2x addition of silane) and a non-impregnated fiber (original, 1x addition of silane, 2x addition of silane). Each group consisted of 4 sample series. The tensile strength was measured by a universal testing machine. The mean of the tensile strength was compared by Kruskal Wallis and Mann Whitney post hoc test. The result showed that the mean of tensile strength (MPa) of an original impregnated fiber (26.60±0.51), 1x addition of silane (43.38±4.42), 2x addition of silane (36.22±7.23