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.
Department of Biomaterials, Okayama University Graduate School of Medicine and Dentistry, Shikata-cho, Okayama, Japan.
Rosalina
R
Tjandrawinata
Masao
M
Irie
Yasuhiro
Y
Yoshida
Kazuomi
K
Suzuki
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