Bonding of Various Methacrylates to Dentin Treated with 10% Citric Acid-3% Ferric Chloride Solution

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  • 各種メタクリレートの10%クエン酸-3%塩化第二鉄溶液処理象牙質への接着性

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Abstract

The bond strength of the resins (MMA-TBB resin system) containing various methacrylates to dentin treated with a 10-3 solution was measured. The resin reinforced dentin was observed by SEM and the distribution of Ca, Fe and Br at resin (2 BEM)-dentin interface was analyzed by EPMA to determine the relationship between the bonding and the chemical structure of methacrylates as well as the formation of the resin reinforced dentin. There was no significant relationship between the monomer structure and the bond strength after immersion in 37℃ water for 1 day or 30 days. The resin reinforced dentin was about 3 μm thick at interface between all resins and dentin as observed by SEM. The presence of Fe in resin reinforced dentin was confirmed from the Fe X ray map and line profile. Br line analyses showed that the concentration of 2 BEM in resin reinforced dentin was higher than the original concentration in the resin monomer.

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