Masking Ability of IPS e.max ALL-Ceramics System of HO Series

摘要：

　　To evaluate the masking ability of IPS e.max all-ceramics system of HO series.IPS e.max Press HO ingots were fabricated into twenty cylindrical specimens (n=5) with the diameter of 13mm and four different thinknesses (0.4mm,0.6mm,0.8mm,1.0mm).All specimens after veneered,gazed and cemented to metal substrate disks (thickness 3mm,diameter 13mm) were measured on both the white background and metal substrate disks background using a spectrophotometer and values of L,a and b were calculated to compare color differences among four groups.Meanwhile △E with the preselected required color (A2 color) were calculated.△E<1.5 was considered a clinically acceptable color match.In the 0.4mm thickness specimens group,the values of L,a and b significantly increased (-1.36±0.05,-0.15±0.06,-1.46±0.02,respectively) between the white background and abutment background.But there were no significant color differences in the other three groups (P<0.05).In the 0.6mm and 0.8mm thicknesses specimens groups,the color difference values (0.71±0.04,1.14±0.06,respectively) with A2 color were less than the defined value.Thus the cylindrical specimens with the thickness of 0.6mm,0.8mm and 1.0mm could mask the metal substrate disks background sufficiently and the thickness of 0.6mm and 0.8mm had an acceptable color match compared with the target color.IPS e.max all-ceramics system of HO series can produce clinically acceptable color match and have the capacity to mask a dark background such as a dark tooth or core buildup material.

关键词： Masking All ceramics Color differences

作者: Shanyu Zhou Longquan Shao Linlin Wang Yuanfu Yi Bin Deng Ning Wen

作者单位: Department of Stomatology,Nanfang Hospital,Southern Medical University,Guangzhou 510515,China Department of Stomatology,the General Hospital of Chinese Peoples Armed Police Forces,Beijing 10003 Department of Stomatology,the General Hospital of Chinese PLA,Beijing 100853,China

会议类型: 国际会议

会议名称: The Seventh China International Conference on High-Performance Ceramics (第七届先进陶瓷国际研讨会(CICC-7))

会议地点: 厦门

会议语种:英文

页码: 1784-1787

在线出版日期: 2011-11-04（万方平台首次上网日期，不代表论文的发表时间）