Effect of adding spherical silica filler on physico-mechanical properties of resin modified glass-ionomer cement.
This study investigated the effects of spherical silica fillers on the physical and mechanical properties of resin-modified glass-ionomer cement (RMGIC). Specimens were fabricated by mixing untreated (UF) or silanized (SF) spherical silica filler into the powder of a commercially prepared RMGIC. The original RMGIC and a preparation containing 20 wt% spherical silica filler were also examined with regard to their fractured surface and fluoride release. The fillers increased the compressive strength remarkably: up to 17% in the case of SF and 9% in the case of UF. Both UF and SF increased the flexural strength by up to 17%. The addition of SF increased the DTS up to 38%, but UF decreased the DTS. The addition of SF improved the workability and the mechanical properties of the RMGIC.
Tjandrawinata
Rosalina
R
Department of Biomaterials, Okayama University Graduate School of Medicine and Dentistry, Shikata-cho, Okayama, Japan.
Irie
Masao
M
Yoshida
Yasuhiro
Y
Suzuki
Kazuomi
K
D000704:Analysis of Variance; D019245:Compressive Strength; D003799:Dental Stress Analysis; D005899:Glass Ionomer Cements / Q000737:chemistry*; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D018583:Pliability; D012044:Regression Analysis; D012117:Resins, Synthetic / Q000737:chemistry; D012821:Silanes; D012822:Silicon Dioxide; D018709:Statistics, Nonparametric; D013499:Surface Properties; D013718:Tensile Strength; D017155:Wettability
C079765:Fuji II LC cement; D005899:Glass Ionomer Cements; D012117:Resins, Synthetic; D012821:Silanes; D012822:Silicon Dioxide