不同桩核材料对IPS-EmpressⅡ全瓷系统颜色的影响  

Influence of different post and core materials on the color of IPS-EmpressⅡ ceramic system

作　　者：王晓丽[1] 聂二民[1] 黄颖荷[1] 刘伟[1] 张春元[1] 

机构地区：[1]中山大学附属第一医院口腔科,广东省广州市510080

出　　处：《中国组织工程研究与临床康复》2010年第12期2171-2174,共4页Journal of Clinical Rehabilitative Tissue Engineering Research

基　　金：广东省科技厅社会发展项目(2008B080703032);课题名称:口腔生物力学循环测试机的实验研究~~

摘　　要：背景:研究表明,不同桩核材料对IPS-EmpressⅡ全瓷冠系统美观修复效果有一定程度的影响。目的:比较IPS-EmpressⅡ全瓷冠在4种不同的桩核材料背景下色彩学方面的差异,为临床选择不同的桩核系统以及应用该全瓷系统提供依据。方法:选取1颗完整离体上颌中切牙,进行桩道、4种不同材料桩核以及一个IPS-EmpressⅡ全瓷冠的制备,分为4组:镍铬合金桩核组、金合金桩核组、氧化锆桩铸瓷核组、纤维桩树脂核组。采用美能达CM-700d分光测色仪,测试4组不同桩核材料背景下IPS-EmpressⅡ全瓷冠唇面中1/3区域的颜色参数。结果与结论:4种不同的桩核材料背景下IPS-EmpressⅡ全瓷冠的L*a*b*值的差异有显著性意义。镍铬合金桩核组的色差大于金合金桩核组,均超过临床可接受水平(△E>2),氧化锆桩铸瓷核组色差大于纤维桩树脂核组,处于临床可接受范围内,但纤维桩树脂核组色差肉眼不能识别其差异(△E<1.5)。在临床应用IPS-EmpressⅡ全瓷冠修复根管治疗后的上前牙时,推荐使用纤维桩树脂核,可以考虑使用全瓷桩核,不建议使用金属桩核。BACKGROUND：Studies have demonstrated that there are some influences of different post and core materials on the aesthetic effect of IPS-EmpressⅡceramic system.OBJECTIVE：To compare the color of IPS-EmpressⅡ ceramic system among four kinds of post and core materials and to provide guidance for the clinical use.METHODS：An intact central incisor was selected from upper jaw.The post path,four kinds of post and core materials,and a crown with IPS-EmpressⅡ ceramic were prepared.There were four groups according to the material：Ni-Cr alloy,golden alloy,ceramic post-and-core,and resin core with fiber-post groups.The CM-700d spectrophotometric tester was used to test the color parameter for the four groups.RESULTS AND CONCLUSION：There were significant difference of the L＊a＊b＊ value in four groups with different post-and-core.The △E value in the Ni-Cr alloy group was larger than in the golden alloy group,beyond the level that could be accepted in clinic（△E 2）.The △E value in the all ceramic post-and-core group was larger than in the resin core with fiber-post group,accepted in clinic,but the color difference could not be identified by the naked eye（△E 1.5）.In combination with IPS-Empress Ⅱ crown,resin core with fiber post was suitable for routine use,all ceramic post-and-core could be recommended,but Ni-Cr alloy and golden alloy post-and-core could not be recommended for clinical practice.

关 键 词：纤维桩树脂核 全瓷桩核 金属桩核 IPS-EmpressⅡ全瓷冠 颜色 口腔生物材料 

分 类 号：R318[医药卫生—生物医学工程]