4种齿科CAD/CAM陶瓷材料的可加工性能研究  

Machinability of Four Types of CAD/CAM Dental Ceramics

作　　者：黄慧[1] 张富强[1] 姚自栋[2] 张骋[2] 

机构地区：[1]上海交通大学医学院附属第九人民医院口腔修复科.上海口腔医学研究所,上海200011 [2]上海应用技术学院材料工程系

出　　处：《口腔医学研究》2011年第3期187-190,共4页Journal of Oral Science Research

基　　金：上海市科委基金资助项目"齿科精细陶瓷可加工性检测方法研究"(编号:07DZ05008);上海市重点学科建设项目资助(编号:S30206)

摘　　要：目的:对VITA公司生产的4种不同齿科CAD/CAM陶瓷材料的可加工性能进行比较实验,以明确不同材料可加工性能上的差异。方法:选择临床上常用的4种CDA/CAM可切削陶瓷材料:Mark II、TriLuxe、In-Ce-ram Alumina和In-Ceram Spinell,主要成份分别为:长石质瓷、氧化铝和镁铝尖晶石,采用磨削、钻削和切削3种加工方法,在相同的实验条件下,检测4种陶瓷材料的磨削深度和切削面积,计算4种材料单位时间的去除率;同时在扫描电镜下观察切削面的形貌,并用表面粗糙度仪测试切削面的粗糙度。结果:在3种加工方式中,In-Ce-ram Alumina的加工效率最高,与另外3种材料之间存在统计学差异(P<0.05);切削面的表面粗糙度长石质瓷较In-Ceram Alumina和In-Ceram Spinell低;长石质瓷的切削面细致均匀,能清晰地看到切削所留下的规整而细致的划痕;而In-Ceram Alumina和In-Ceram Spinell切削面无明显划痕,呈多孔结构,表面凹凸不平。结论:采用In-Ceram技术的齿科修复陶瓷较长石质瓷具有更好的可加工性能。Objective：To evaluate the machinability of four kinds of dental machinable ceramics with several methods,and to compare the surface quality after cutting.Methods：Four dental machinable ceramics Mark II,TriLuxe,In-Ceram Alumina and In-Ceram Spinell were tested with grinding,drilling and cutting methods under the same testing parameters.And the differences of removal rate were measured.The surface roughness parameters after cutting were measured by surface roughness measuring instrument,and the surface quality was investigated by SEM.Results：The results showed that In-Ceram Alumina reached the supreme machinable efficiency.The traditional feldspar ceramic achieved higher surface quality after cutting test.Conclusion：In-Ceram Alumina and In-Ceram Spinell by In-Cream technology possessed better machinability.

关 键 词：齿科陶瓷 可加工性 磨削 切削 钻削 

分 类 号：R783.1[医药卫生—口腔医学]