3种全瓷系统冠边缘适合性的比较(英文)  

A comparison of three-dimensional marginal adaptation among three all-ceramic crown systems

作　　者：张艳[1] 李江[2] 薛小琴[3] 陈振宇[2] 李小菊[2] 

机构地区：[1]吉林大学口腔医学院综合治疗科,吉林长春130021 [2]吉林大学口腔医学院修复科,吉林长春130021 [3]青海省人民医院超声科,青海西宁810007

出　　处：《上海口腔医学》2011年第5期494-499,共6页Shanghai Journal of Stomatology

基　　金：Supported by Grant from Science and Technology Projects of Changchun City(06GG163)~~

摘　　要：目的:比较临床常用3种全瓷系统(Kavo Everest、IPS e.max、In-Ceram alumina)冠的边缘适合性,为临床应用提供理论依据。方法:选取1颗无龋的离体前磨牙行牙体预备,其中牙合面预备2mm,颈部凹槽肩台,宽度为0.8mm,牙合聚合度为6°。双重印模法取模,每种系统分别制作10个冠修复体。然后采用双色硅橡胶印模法复制间隙模型,应用光学显微镜采集间隙图像及使用Auto CAD2006软件对其水平边缘间隙、垂直边缘间隙和绝对边缘间隙进行测量,将所得数据使用SPSS13.0软件包进行单因素方差分析。结果:3种全瓷系统制作的上颌前磨牙冠的水平边缘间隙的平均值在41.1～44.9μm,垂直边缘间隙的平均值在51.4～71.7μm,绝对边缘间隙的平均值在66.2～85.1μm。结论:本研究中,3种全瓷系统冠的绝对边缘间隙、垂直边缘间隙和水平边缘间隙均在临床可接受范围;然而,与In-Ceramalumina系统相比,IPS e.max和Kavo Everest系统制作的全瓷冠显示出较好的边缘适合性。PURPOSE： This study was to compare the marginal adaptation of single crown made of 3 different all-ceramic systems（IPS e.max,In-Ceram alumina,Kavo Everest） in vitro using a light-body silicone supported by a heavy-body silicone material.METHODS： The crowns were made for 1 extracted maxillary premolar prepared with a 0.8-mm chamfer margin and 6-degree tapered walls by milling.Ten crowns per system were fabricated.The horizontal marginal discrepancies,vertical marginal discrepancies and absolute marginal discrepancies were measured under an optical microscope at 39.2 magnification.The data were analyzed with one-way analysis of variance（ANOVA） using SPSS 13.0 software package.RESULTS： The results showed the mean values for horizontal marginal discrepancies were between 41.1μm and 44.9μm,for vertical marginal discrepancies were between 51.4μm and 71.7μm,and for absolute marginal discrepancies were between 66.2μm and 85.1μm.CONCLUSIONS： The horizontal marginal discrepancies,vertical marginal discrepancies and absolute marginal discrepancies of the three all-ceramic crown systems were within the clinically acceptable standard.However,the IPS e.max system and the Kavo Everest System showed a better marginal fit compared with the In-Ceram alumina system.

关 键 词：边缘适合性 冠 全瓷 IPSe.max KavaEverest 

分 类 号：R783.3[医药卫生—口腔医学]