IADR Abstract Archives
Evaluation of FSC (Full-coverage Silane Coating) Technology
Objectives: In daily dental practice, glass filler is used as one of the components in restorative materials. Generally, surface of inorganic filler is hydrophilic. On the other hand, resin monomer is hydrophobic. It is important for filler to be treated by silane coupling agent because the Interface between filler and resin matrix impact on physical, chemical and mechanical properties of composite. Recently, new method for silane coupling treatment called FSC technology was developed by GC corporation. This method can be applied to various kinds of products with organic-inorganic composition. The purpose of this study is to evaluate the surface of inorganic filler treated by FSC(Full-coverage Silane Coating) technology.
Methods: We compared surface of glass filler treated by FSC technology and conventional method. Treated surface area was calculated from the ratio of SiOH(3500cm-1) peak height and carbonyl-group(1720cm-1) peak height by FT-IR(Fourier-Transform Infrared Spectroscopy). Silane coated inorganic glass filler were selected for analysis, 1) treated by FSC and 2) treated by manufacture as control. Silane coated inorganic glass filler were analyzed by FT-IR(Nicolet iS-50 FT-IR, Thermo Fisher Scientific). Two samples were examined by KBr tablet method. Prepared specimens were measured on the range of wave number from 4000 cm-1 to 1500 cm-1(n=11). Data were analyzed by Welch’s t-test(p<0.05).
Results: FSC treated glass filler showed significantly lower peak height ratio compared to control. This result suggests that FSC makes more hydrophobic area on the surface of inorganic glass filler than control.
Conclusions: FSC treated glass filler showed significantly less hydroxy-groups than glass filler of control and was uniformly covered with silane coupling agents. Results could be from higher chemical reaction rate between SiOH on the surface of filler and silane coupling agents. FSC has potential to produce higher physical, chemical and mechanical properties on composite product line.
Methods: We compared surface of glass filler treated by FSC technology and conventional method. Treated surface area was calculated from the ratio of SiOH(3500cm-1) peak height and carbonyl-group(1720cm-1) peak height by FT-IR(Fourier-Transform Infrared Spectroscopy). Silane coated inorganic glass filler were selected for analysis, 1) treated by FSC and 2) treated by manufacture as control. Silane coated inorganic glass filler were analyzed by FT-IR(Nicolet iS-50 FT-IR, Thermo Fisher Scientific). Two samples were examined by KBr tablet method. Prepared specimens were measured on the range of wave number from 4000 cm-1 to 1500 cm-1(n=11). Data were analyzed by Welch’s t-test(p<0.05).
Results: FSC treated glass filler showed significantly lower peak height ratio compared to control. This result suggests that FSC makes more hydrophobic area on the surface of inorganic glass filler than control.
Conclusions: FSC treated glass filler showed significantly less hydroxy-groups than glass filler of control and was uniformly covered with silane coupling agents. Results could be from higher chemical reaction rate between SiOH on the surface of filler and silane coupling agents. FSC has potential to produce higher physical, chemical and mechanical properties on composite product line.