抄録
This study aims at clarifying the shrinkage behavior due to the polymerization of a light cure resin composite, dental restoration material. Digital image correlation method was applied to determine the shrinkage displacements in a cylindrical and semi-cylindrical cavities of a bovine tooth. The cavities were filled with a resin composite (kuraray CLEARFIL AP-X) after spreading a dental bonding agent (kuraray CLEARFIL tri-S BOND). The experimental result showed that large shrinkage displacements were observed on the free surfaces of the cavities.
