【摘要】 目的　本实验研究一种高强度全瓷桥核型材料—— GI- 型渗透陶瓷与饰面瓷的热膨胀匹配性。方法　制作 GI- 型渗透陶瓷、饰面瓷 Vitadur N Dentine(本质瓷 )、Vitadur N Enamel(釉质瓷 )、Vitaudrα OpaqueDentine (遮色本质瓷 )、Vitadurα Dentine(本质瓷 )、Vitadurα Enamel(釉质瓷 )的试件 ,测试其 5 0～ 5 0 0℃热膨胀系数。结果　热膨胀系数 (× 10 - 6 /℃ )分别是 7.40 9、7.183、7.5 81、7.131、7.0 6 7、7.2 33。 GI- 型渗透陶瓷热膨胀系数均略大于饰面瓷 Vitadur N和 Vitadurα的本质瓷及遮色本质瓷。结论　 GI- 型渗透陶瓷与其饰面瓷热膨胀匹配更多还原

【Abstract】 WT5”BZ]Objective This study was to study the thermal match of a high strength core material for all ceramic bridge, GI Ⅱ Infiltrated Ceramic with its veneering porcelain. Methods GI Ⅱ Infiltrated Ceramic, Vitadur N Dentine, Vitadur N Enamel, Vitadur Alpha Opaque Dentine, Vitadur Alpha Dentine and Vitadur Alpha Enamel samples were fabricated. Their thermal expansion coefficients (TEC) were tested. Results The thermal expansion coefficients(×10 6 /℃) were 7.409,7.183,7.581,7.131,7.067,7.233 respectively. GI Ⅱ Infiltrated Ceramics TEC value was a little higher than those of its veneer porcelains. Conclusion GI Ⅱ Infiltrated Ceramic matches its veneer porcelains thermally.更多还原