硬質レジン歯への光重合型コンポジットレジン添加時における効果的な表面処理について

概要

論文の詳細を見る
Damaged or worn down acrylic denture teeth are often repaired using a self-curing acrylic resin or a composite resin. Recently hard type acrylic (HA) artificial teeth have been used clinically because of higher wear resistance. In some cases, however reconstruction of the HA denture teeth are still needed. In this study, we tried to find an effective treatment method for repairing damaged surfaces of HA denture teeth with a light curing composite resin which has good wear resistance and better chance of manipulation. The shear bond strength of a light curing composite resin to HA denture teeth, was evaluated after applying to bonding surface, four different agent and their combinations. They were an etching (E), an organic solution (Rebase Aid; RA), a silanecoupling agent (Porcelain Liner M ; PL), and a bonding agent (B), combinations were E+B, E+RA+B, E+PL+B and E+RA+PL+B. As the result, maximum strength was obtained E+RA+PL+B, about 130 kgf/cm^2. Accordingto our results, clinically damaged or worn down HA denture teeth should be repaired with a light curing composite resin after occlusal surface treatment with an etching, an organic solution (RA), a silanecoupling (PL) and a bonding agent.
1990-10-01