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ID:15116260
大小:39.52 KB
页数:12页
时间:2018-08-01
《不同冲洗液联合应用去除根管玷污层的效果评价》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、不同冲洗液联合应用去除根管玷污层的效果评价作者:姜醒,郑瑜谦,吴为良,王海亮【摘要】目的比较不同冲洗液联合应用去除根管玷污层的效果。方法40颗离体单根管牙截冠后随机分为5组,采用冠向下法进行根管预备,预备中分别以不同根管冲洗液进行根管冲洗。A组:20g/L醋酸氯已定(CHX)溶液;B组:25g/L次氯酸钠(NaOCl)溶液;C组:20g/LCHX溶液+乙二胺四乙酸(EDTA)凝胶;D组:25g/LNaOCl溶液+EDTA凝胶;E组(对照组):蒸馏水。然后将牙体沿颊舌向纵劈,扫描电镜观察各组样本在根中1/3
2、玷污层和牙本质碎屑的去除情况,统计学分析比较各组根管清洁的差异。结果A、B、C和D组与E组比较差别有统计学意义(P<0.05),B、D组对玷污层的去除和牙本质小管开放程度与A、C组比较,差别有统计学意义(P<0.05)。两两比较得出C组优于A组(P<0.05),B、D两组差别无统计学意义(P>0.05)。结论CHX、NaOCl单独或联合EDTA凝胶均可去除玷污层。NaOCl+EDTA凝胶组的冲洗效果最好,单独使用CHX清洁效果不佳,与EDTA凝胶配合使用去除玷污层的能力有提高。【关
3、键词】根管疗法;根管冲洗剂;消毒药(剂);依地酸;显微镜检查,电子,扫描12ABSTRACT:ObjectiveTocomparetheeffectsofapplicationmodesofdifferentrootcanalirrigantsonremovingthesmearlayerofrootcanals.Methods40humanteethwithasinglerootcanalwererandomlydividedinto5groupsaftertheamputationofthecrown
4、softheseteeth.Alloftherootcanalswereirrigatedwithsixdifferentrootcanalirrigantswhenthecanalswerepreparedwithcrowndowntechnique.TheteethinGroupAwereirrigatedwith20g/Lchlorhexidineacetatesolution(CHX),andGroupBwith25g/Lsodiumhypochloritesolution(NaOCl).Int
5、hespecimensofGroupCtherootcanalswereirrigatedwith20g/LCHX+EDTAgel,andthoseofGroupDwith25g/LNaOCl+EDTAgel.ThecontrolspecimensinGroupEwereirrigatedwithdistilledwater.Aftertheteethweresplitintotwobuccallingually,thecleaningeffectsofallthespecimensfromthe5gr
6、oupsontheremovalofsmearlayerinthemiddlethirdoftherootcanalanddebriswasobservedwithascanningelectronmicroscope,andanalyzedstatistically.ResultsComparedwithGroupE,therewassignificantdifferenceamongGroupA,B,CandD(P<0.05).GroupBandDhadsignificantlylesssmea
7、rlayerandmorevisibleopendentinaltubulescomparedwithGroupAandC(P<0.05).PairedcomparisonshowedthatGroupCwassuperiortoGroupA12(P<0.05).TherewasnosignificantdifferencebetweenGroupBandD(P>0.05).ConclusionEitherchlorhexidineorNaOCl,usedaloneorincombina
8、tionwithEDTAgel,canremovesmearlayer.ThegroupwithNaOCl+EDTAgelhasthebestcleaningeffect.Chlorhexidinesolutionasarootcanalirrigantcannotremoveallthesmearlayerfromtherootcanalsystem.CombinedwithEDTAgel,however,itsperfo
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