In recent years, zirconia frameworks are fabricated with row-stage zirconia blanks using CAD/CAM technology. Furthermore, a newly developed fiber reinforced plastics (FRP) frameworks nowadays is used for FPDs because of high toughness.

This study was made to evaluate the flexural strength of FRP disks and the shear bond strength between the FRP disks and indirect composite resins for a start. Next, we examined the deformation of FRP frameworks caused by the polymerization shrinkage of the indirect composite resins : the discrepancy between the stone models and frameworks, and strain of frameworks using strain gauge attached to the frameworks.

A. 目的

CAD/CAMが普及し，様々な材料が開発されている．その中から私たちは高い靭性と軽さが特徴のグラスファイバー強化型レジンディスク (以下FRPディスク) に着目した．

本研究では，歯冠用硬質レジンの重合収縮がFRPフレームに及ぼす影響について検討した．