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1、三种烤瓷基底冠适合性比较探究［摘要］目的：研究比较Captek.贵金属合金和银铭■合金3种不同烤瓷基底冠适合性，为临床应用提供实验依据。方法:分别制备Captek、贵金属合金、镰牢各合金基底冠，用磷酸锌粘固剂将3组试件粘固于代型上，用线切割机将冠及代型沿纵轴抛开，采用扫描电镜测量6个观察点处基底冠组织面与代型之间的间隙大小，其值进行统计学分析，比较3组基底冠不同部位的适合性。结果：Captek的间隙最大值为(9&02±4.10)Um,贵金属合金基底冠的间隙最大值为(102.42±6.51)urn,镰辂合金基底冠的间隙最大值为(135.67±5.30)umoCaptek和贵金属合金基底冠适合性在
2、统计学上无明显性差异(P>0.05),Captek和贵金属合金基底冠适合性均与鎳鎔合金基底冠有显著的统计学差异(PV0.05)o结论：Captek和贵金属合金基底冠具有良好的适合性，与上述二者相比，镰鎔合金基底冠边缘适合性较差。［关键词］Captek；烤瓷基底冠；适合性［中图分类号1R783［文献标识码］A［文章编号］1008-6455(2008)05-03Comparativestudiesonadaptationofcaptek,noblealloyandNi~CralloyLIUYu-hongl,HEHui-mingl,LIULan2,WANGZhong-yil(1.Department
3、ofProsthetics,CollegeofStomatology,FourthMilitaryMedicalUniversity,Xi‘an710032,Shaanxi,China；2.DepartmentofStomatology,ShaanxiProvincialCorpsHospital,ChinesePeople'sArmedPoliceForces)Abstract:ObjectiveTocomparethemarginaladaptationofthreekindsofporcelainfusedtometalbasecrownmaterials：Captek,nobleall
4、oyandNi~Cralloy.Anditcanprovideanexperimentalbasisfortheclinic.MethodsCaptek,noblealloyandNi~CralloywereselectedtofabricatePFMbasecrowns・Allbasecrownswerecementedtotheirrespectivediesbyzincphosphatecement.Afterthat,thesebasecrowns/diesassemblywerecutalonglongitudinalaxisbylinecuttingmachine・Thegapbe
5、tweenbasecrowntissuesurfaceanddiewasmeasuredby6-pointmeasuringmethodwithSEM.Themarginaladaptationofdifferentpartsofthreekindofbasecrownswerecomparedstatistically.ResultsThevaluesofadaptionofthreemetalesbasecrownsrespectivelyare(98.02+4.10)um,(102.42±6.51)Pm,(135.67+5.30)um.Statisticalanalysisofvaria
6、nceofmarginaladaptationvaluesshowedthatnosignificantdifferencewasbetweenCaptekgroupandnoblealloygroup（P>0.05）.However,thereweresignificantdiffereneebetweenNi~Cralloyandtheothergroups（P<0.05）.ConclusionCaptekandnoblealloybasecrownhavegoodmarginaladaptationandcanmeettheclinicaldemand,however,inNi~Cral
7、loy,viceversa.Keywords：Captek；porcelainfusedtometalbasecrown；marginaladaptationCaptek金属基底的制作不同于常规失蜡精密铸造，其基底的制作是在代型上直接烧结而成，因此它的适合性会受到烧结过程中代型膨胀、金属收缩变形的影响。然而有关其适合性的研究尚未见报道。本实验研究了Captek基底冠的适合性并与贵金属合金和鎳鎔合金
