페이스트 오펙 제조에 관한 연구 Ⅱ. 페이스트 오펙 포세린의 금속과의 결합강도 비교

Abstract

Metal-ceramic system has widely using for aesthetic dental prosthesis. Opaque porcelain is used for the masking of the metallic color of coping and the enhancing of the bond strength between metal and porcelain for PFM system. Pste opaque is a new type of opaque porcelain to easily apply onto metal coping and to get uniform thickness and good bonding characteristics to metal.

The paste opaque was prepared by mixing powder with organic substances for this study. Three kinds of paste opaque which are in market were selected to compare the particle size distribution and bond strength with the paste opaque prepared in this study. The particle size distributions of all paste opaques were measured by particle size analyser, and the bond strengths were examined by using universal testing machine.

This study shows that the maximum size of all samples is under 50㎛ and Ceramco has the finest mean particle size. The bond strength of the prepared paste opaque is about 35 MPa, and it is satisfied with ISO standard(25MPa).