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1、瓷修复体及金属托槽粘接强度实验探究［摘要］目的：研究两种不同形状的底板(燕尾状、网状)对正畸金属托槽与瓷修复体粘接强度的影响。方法：根据瓷面处理方式及所粘接托槽的不同，将80个瓷修复体随机平均分为4组：金刚砂车针打磨+燕尾状底板托槽；金刚砂车针打磨+网状底板托槽；9.6%氢氟酸(hydrofluoricacid,HF)酸蚀+燕尾状底板托槽；9.6%HF酸蚀+网状底板托槽。将粘接后的每组瓷修复体随机平均分为2组：组1用37*人工唾液水浴24h；组2不予处理。用硅烷偶联剂、杜拉菲勒光固化复合树脂充填材料进行粘接。检
2、测抗剪切强度及粘结剂残留指数。结果：经人工唾液水浴后，抗剪切强度燕尾状底板托槽组较网状底板托槽组高，且差别有统计学意义(P<0.05)；瓷面经打磨处理后，粘结剂残留指数网状底板组高于燕尾状底板组，且差别有统计学意义(PV0.05)。结论：燕尾状底板较网状底板提供更大的抗剪切强度；瓷面经金刚砂车针打磨较用HF酸蚀提供更大的抗剪切强度，且遗留较多粘接剂。［关键词］瓷修复体；托槽底板；抗剪切强度；粘结剂残留指数［中图分类号1R783.1［文献标识码］A［文章编号11008-6455(2012)02-0257-04In
3、vestigationintothebondstrengthofmetalbracketstoceramicrestorationWANGChun-ye,SHAOPing,ZHAOYuan,XUShi-qian,SONGBing(DepartmentofOrthodontics,CollegeofStomatology,HarbinMedicalUniversity,Harbin150001,Heilongjiang,China)Abstract：ObjectiveToinvestigatetheinfluen
4、ceofdifferentbracketbasesurfaces(swallowtail-backedandmesh-backed)onthebondstrengthofmetalbracketstoporcelain.MethodsMethods80ceramicsspecimenwererandomlyandequallydividedinto4groupsaccordingtodifferentconditioningtechniques：(A)deglazingbygrindingandbondings
5、wallow-tail-backedmetalbrackets,(B)deglazingbygrindingandbondingmesh-backedmetalbrackets,(C)etchingwith9.6%hydrofluoricacid(HF)andbondingswallow-tai1-backedmetalbrackets,(D)etchingwith9.6%HFandbondingmesh-backedmetalbrackets.Eachgroupwasfurtherdividedinto2gr
6、oupsrandomlyandequally：(1)allspecimenswerestoredinartificialsalivaat37°Cfor24hours,(2)untreated.SilanecouplingagentsandDurafillBondTMadhesivewereutilizedtobondthebracketontoeachsample・TheshearbondstrengthandtheAdhesiveremnantindex(ARI)weredetermined.ResultsA
7、fterartificialsalivabath,theswallowtai1-backedgroupsresultedinastatisticallysignificanthigherbondstrength.Deglazingspecimens,mesh-backedgroupinwhichhasastatisticallysignificanthigheradhesiveremnantindex(ARI).ConclusionTheswallow-tail-backedgroupsresultedinah
8、igherbondstrength(SBS)・ThedeglazinggrouphadahigherSBSthanthegroupofetchingwith9.6%hydrofluoricacid(HF)for3min.Keywords：Ceramicrestoration；bracketbasesurfaces；shearbondstrength(SBS)；adhesiveremna
