陶瓷表面离子交换剂处理对热压铸瓷冠抗碎裂载荷的影响  

The effect of ion-exchange treatment on the fracture resistance of hot pressable ceramic crown

作　　者：王辉[1] 陈吉华[1] 熊宇[1] 李雅卿[1] 

机构地区：[1]第四军医大学口腔医学院修复科,陕西西安710032

出　　处：《上海口腔医学》2008年第4期438-440,共3页Shanghai Journal of Stomatology

摘　　要：目的:研究国产陶瓷表面离子交换处理对热压铸瓷冠抗碎裂载荷的影响。方法:因治疗需要拔除的16颗无龋坏磨牙,进行标准基牙预备,轴面聚合角5°,肩台宽(1±0.1)mm,制成厚度为1.5 mm的Cerinate热压铸瓷冠,上釉后对冠进行离子交换处理,以光固化树脂粘结于牙体上,垂直加压于全冠,直至其碎裂。采用SPSS11.0软件包对数据进行单因素方差分析。结果:后牙的热压铸造陶瓷冠经离子交换处理后,其抗碎裂载荷值可达到(2891.4±25.3)N,与对照组间有显著差异(P<0.01)。结论:国产陶瓷离子交换处理可增加热压铸瓷冠的抗碎裂载荷。PURPOSE： To study the effect of ion-exchange treatment on the fracture resistance of hot pressable ceramic crown. METHODS： Sixteen cerinate ceramic crowns （shade 2） were prepared. The crowns were manufactured according to the company＇s recommendations and cemented onto the teeth with resin cement in combination with dentin bonding agent after ion-exchange treated with potassium salt at 450℃ for 11 hours . The crowns were then loaded in compression to failure, Failure loads were analyzed using SPSS 11.0 software package for one-way ANOVA. RESULTS： After ion- exchange treatment, the mean fracture resistance of the hot pressable ceramic crown was （2891.4±25.3）N. There was significant difference between the experimental and control groups （P〈0.01）. CONCLUSION： Ion-exchange treatment can increase fracture resistance of the cerinate hot pressable ceramic crowns, it may help to increase the clinical reliability of Lucite reinforced ceramic dental restorations.

关 键 词：热压铸造陶瓷 碎裂载荷 离子交换 

分 类 号：R783.1[医药卫生—口腔医学]