微波烧结和常规烧结氧化锆全瓷冠适合性的比较  

Comparison the fitness of zirconia ceramic crown sintered by microwave sintering method and conventional sintering method

作　　者：吴丽艳[1] 苏晓晖[1] 王磊[1] 韦赞军 

机构地区：[1]广西医科大学口腔医学院,广西南宁530021 [2]广西南宁深雅科技有限公司,广西南宁530021

出　　处：《临床口腔医学杂志》2014年第7期445-447,共3页Journal of Clinical Stomatology

基　　金：广西教育厅科研资助项目(201012MS047)

摘　　要：目的:研究微波烧结工艺制作的Cercon氧化锆全瓷冠适合性。方法:选取1颗完好的离体前磨牙行全瓷冠牙体预备,双重印模法取模,翻制10个相同的环氧树脂代型,将代型随机分为2组,利用CAD/CAM制作Cercon全瓷冠后,分别用微波二次烧结和常规二次烧结,将制得的全瓷冠粘接、包埋、切割后利用扫描电镜(SEM)测量冠适合性。结果:两种烧结方法制作的冠的边缘间隙和轴面间隙差异均无统计学意义(P>0.05),肩台间隙和牙合面间隙差异均有统计学意义(P<0.05)。结论:利用微波二次烧结制作的Cercon全瓷冠具有与常规烧结氧化锆相似的冠边缘适合性,在临床的接受范围内。Objective：To study the effect of different sintering method on the marginal and internal adaptation of Cercon zirconia crowns. Method：A first premolar teeth was prepared and replicated in to ten resin castes. The units were randomly assigned to two groups and the crowns were made by CAD/CAM system. Group one was sintered by manufacturers recommend conventional second-time sintering process. Group two was sintered by microwave second-time sintering process. All crowns adhered to the corresponding dies and compare their adaption through statistical analysis. Result：Marginal fit and axial plane of zirconia ceramic crowns sintered by two methods have no significant differences （P〉0.05）. Shoulder suitability and occlusal surface have significant differences （P 〈0.05）.Conclusion：Microwave sintered Cercon zirconia crowns appeared to have clinically acceptable marginal fit.

关 键 词：冠适合性 微波二次烧结 氧化锆 

分 类 号：R783.2[医药卫生—口腔医学]