Abstract
The present study attempted to identify the optimal dilution at which at which the effects of surface reaction-type pre-reacted glass-ionomer (S-PRG) filler eluate on human gingival fibroblasts (HGF) may be safely examined in vitro. S-PRG filler is a material that releases six ions and exerts strong caries-suppressing effects. We prepared S-PRG filler eluate in which S-PRG filler and α-MEM were mixed as a medium for HGF. This eluate contains six ions that are released from S-PRG filler. All cells died in proliferation experiments on HGF using S-PRG filler eluate, which demonstrated that unless S-PRG filler eluate was diluted, the ion concentration was strongly cytotoxic. S-PRG filler eluate diluted by 1/100 or more with the addition of 2% or more of FBS was safe for use. We herein successfully established the optimal dilution of S-PRG filler eluate at which HGF may be safely examined in vitro.
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