Glass-ionomer cements, which consist of CaO-CaF2-Al2O3-SiO2 glass powders and polyalkenoic acid, such as polyacrylic acid (PAA) aqueous solution, are widely used in dentistry, because of their fast setting ability without shrinkage and significant temperature increase, as well as high mechanical strength. However, they do not show bone-bonding ability, i.e. bioactivity. In the present study, and the possibility for obtaining bioactive glass-ionomer cements was fundamentally investigated. For this purpose, the effect of PAA on the apatite formation on bioactive ceramics in a simulated body fluid was investigated. It was revealed that even a small amount of PAA inhibits the apatite formation in the body environment. It is speculated that when the glass-ionomer cements are implanted into the body, PAA is released from the glass-ionomer cements and inhibits the apatite formation on their surfaces, as far as glass-ionomer cements are composed of PAA. Therefore, it is considered to be difficult to obtain bioactive glass-ionomer cements.
|ジャーナル||Key Engineering Materials|
|出版ステータス||Published - 2001 1月 1|
|イベント||13th international Symposium on Ceramics in Medicine (BIOCERAMICS) - Bologna, Italy|
継続期間: 2000 11月 22 → 2000 11月 26
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