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时间:2019-05-28
《3种抛光方法对2种复合树脂边缘微渗漏的影响》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、上海口腔医学2015年2月第24卷第1期·52·Shan曲aiJouma1ofStomatologyVo1.24No.1February,2015[文章编号]1006.7248(2015)01.052.043种抛光方法对2种复合树脂边缘微渗漏的影响何宏.汪轶(上海交通大学医学院附属第九人民医院·口腔医学院口腔综合科,上海市口腔医学重点实验室,上海200011)[摘要】目的:评价3种抛光方法对2种复合树脂边缘微渗漏的影响。方法:选择80颗离体恒前磨牙,在每颗牙的颊侧颈部釉一牙骨质交界处用高速涡轮机制备盒形单面洞.长和宽均为3mm.洞深2mm使
2、用3MZ350树脂和3MZ250树脂各充填4O颗牙。按照充填材料不同,随机分为不抛光组、Sof_lexdiscs抛光系统组、Super-snap抛光系统组和金刚砂抛光车针修形后再用橡皮杯抛光组。实验样本冷热循环后.在2%亚甲基蓝溶液中浸泡24h,沿牙体长轴将充填体正中颊舌向纵行剖开,立体显微镜(x40)下观察剖面.采用Spot4.6图像分析软件测量渗漏深度采用SPSS17.0软件包对各组的微渗漏程度和深度分别进行Mann—WhitnevU检验和Kroskal—Walls秩和检验。结果:3MZ350各组的边缘微渗漏深度分别为(0.655~0.
3、486)、(0.626~0.497)、(0.634~0.345)和(0.875~0.283)mm。3MZ250各组的边缘微渗漏深度分别为(0.785~0.553)mm、(0.763~0.491)mm、(0.789~0.308)mm和(0.942~0.318)mm。2种树脂充填后,3种抛光方法树脂边缘微渗漏程度和深度均有显著差异(P4、lishingmethodsonmicroleakageof2kindsofresincompositerestorationsHEHong,WANGYi.(DepartmentofGeneralDentistry,NinthPeoplesHospital,CollegeofStomatology,ShanghaiJt∞TongUniversitySchoolofMedicine,ShanghaiKeyLaboratoryofStomatology.Shanghai200011,China)【Abstract]PURPOSE:Toevalu5、atetheeffectofdifferentpolishingmethodsonmicroleakageofdifferentresincompositerestorations(FihekZ350andFiltekZ250).METHODS:Standardizedpreparations(thebox—typecavities,3mminlengthandwidth,2mmindepth)werepreparedatthecemento-enameljunctiononbuccalsurfaceof80premolars.Theywe6、rerandomlydividedinto2groups,andrestoredwithcomposites(FiltekZ350orFikekZ25o1.Basedonpolishingmethods,thespecimensofeachgroupwererandomlyclassifiedinto4subgroups:nopolishing,polishingwithSof-lexdiscs,polishingwithSuper—snapdiscsandpolishingwithdiamondburs.Afterthermalcircu7、lation(2000times,5-55~C)andsoakedfor24hoursin2%methylbluesolution,thespecimenswerecutthroughthemidlineoftherestoration,themicroleakageattheocclusalmarginandthegingivalmarginwereobservedunderastereomieroscopeandtheleakagedepthwasmeasuredwithSpotversion4.6softwarepackage.The8、microleakagewidthandmicroleakagedepthofdifferentgroupswereanalyzedwithSPSS17.0softwarepac
4、lishingmethodsonmicroleakageof2kindsofresincompositerestorationsHEHong,WANGYi.(DepartmentofGeneralDentistry,NinthPeoplesHospital,CollegeofStomatology,ShanghaiJt∞TongUniversitySchoolofMedicine,ShanghaiKeyLaboratoryofStomatology.Shanghai200011,China)【Abstract]PURPOSE:Toevalu
5、atetheeffectofdifferentpolishingmethodsonmicroleakageofdifferentresincompositerestorations(FihekZ350andFiltekZ250).METHODS:Standardizedpreparations(thebox—typecavities,3mminlengthandwidth,2mmindepth)werepreparedatthecemento-enameljunctiononbuccalsurfaceof80premolars.Theywe
6、rerandomlydividedinto2groups,andrestoredwithcomposites(FiltekZ350orFikekZ25o1.Basedonpolishingmethods,thespecimensofeachgroupwererandomlyclassifiedinto4subgroups:nopolishing,polishingwithSof-lexdiscs,polishingwithSuper—snapdiscsandpolishingwithdiamondburs.Afterthermalcircu
7、lation(2000times,5-55~C)andsoakedfor24hoursin2%methylbluesolution,thespecimenswerecutthroughthemidlineoftherestoration,themicroleakageattheocclusalmarginandthegingivalmarginwereobservedunderastereomieroscopeandtheleakagedepthwasmeasuredwithSpotversion4.6softwarepackage.The
8、microleakagewidthandmicroleakagedepthofdifferentgroupswereanalyzedwithSPSS17.0softwarepac
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