An Application of Pure Titanium to the Metal Porcelain System

Abstract

The purpose of this study is to investigate the feasibility of pure titanium to the metal-porcelain system. Since thermal expansion coefficient of pure titanium was 9.41 x 10-6 V°C (100-400°C) and was considerably smaller than those of the conventional alloys for porcelain, a porcelain having the thermal expansion coefficient of 8.5-8.9X 10-6/°C was experimentally prepared. The bonding strengths of pure titanium to newly prepared porcelains were more than 160 kg/cm2, which is close to those between conventional metals and “Vita” porcelains. Pure titanium has the intermediate mechanical properties between gold and nickel-chromium alloys and higher sag resistance than these alloys. © 1983, The Japanese Society for Dental Materials and Devices. All rights reserved.