Abstract
Polychlorotrifluoroethylene (PCTFE) resin was chosen to make a composite resin paste that contained a glass fiber. The paste was used as a restorative material, and was baked at 250〜280℃ for 1hr, after being applied to a metal frame of veneer or tissue surface of pontic. Technical work concerning this resin for restoration, mechanical properties, adhesive bonding strength between composite resin and metal after baking, were investigated. The technical work was performed easily. The tensile strength, elongation, elastic modulus, knoop hardness and bonding strength of specimens that contained 0.5g fiber in 10ml of PCTFE paste and were quenched in tap water immediately after baking, were 322kg/cm2, 43%, 87×102kg/cm2 and 7.6, 150kg/cm2, respectively;all of these except elongation were increased in the case of slow cooling. This composite resin is expected to prevent the accumulation of plaque or the adhering of staining substances in the oral cavity.
