Vita In-Ceram Zirconiaȫ���޸����ٴ�Ч������

目的    探讨Vita In-Ceram Zirconia渗透陶瓷全瓷修复体的修复效果 ，为临床应用提供参考。方法    对2008年3—5月广东省深圳牙科医疗中心门诊收治的59例接受全瓷修复的患者，共使用Vita In-Ceram Zirconia渗透陶瓷全瓷修复体81件 ，其中上颌61件 ，下颌20件；前牙全冠44个 ，后牙全冠27个 ，前牙固定桥4个， 后牙固定桥6个。通过3～24个月的观察 ， 采用美国加利福尼亚牙科学会的质量评价体系对Vita In-Ceram Zirconia渗透陶瓷前、 后牙全冠与前、后牙固定桥修复进行临床效果评价。结果    观察期间失访2例患者4件修复体，对剩余57例患者77件修复体的临床观察结果表明 ， Vita In-Ceram Zirconia 渗透陶瓷全冠具有良好的边缘密合性 ，色泽稳定 ，强度高 ，其失败率为0.030 %。结论    在严格选择适应证的前提下，Vita In-Ceram Zirconia渗透陶瓷修复是一种效果良好的全瓷修复方式。

Clinical observation on all-ceramic restorations using Vita In-Ceram Zirconia glass-infiltrated ceramic

Objective To investigate the clinical effect of Vita In-Ceram Zirconia glass-infiltrated ceramic restorations,and to provide a reference for clinical application.Methods A total of 81 restorations（61 maxillary and 20 mandibular prostheses） made with Vita In-Ceram Zirconia glass-infiltrated ceramic were examined in 59 patients.There were 44 anterior tooth crowns,27 posterior tooth crowns,4 anterior fixed bridges and 6 posterior fixed bridges.Surface,color,anatomic form,and marginal integrity of restorations were assessed at 3 months,6 months,1 year and 2 years after cementation with the California Dental Association（CDA） quality assessment evaluation system.Results It showed that the marginal fitness,color stability and strength of crowns were considered to be satisfactory.Only 0.030 %（two crowns） were not acceptable.One posterior fixed bridge were not acceptable at 3-month visit;however,the fixed bridge were considered to be satisfactory.Conclusion With strict control of indications,it is possible to construct excellent all-ceramic prostheses with the Vita In-Ceram Zirconia glass-infiltrated ceramic system.