温度和声波振动对玷污层清除效果的比较研究  

Comparason of the effects of temperature and sonic agitation in smear layer removal

作　　者：郭香君 苗晖[1] 李蕾[1] 韩泽文 卢妍[1] 吴丽更[1] 

机构地区：[1]天津医科大学口腔医院牙体牙髓科,天津300070

出　　处：《牙体牙髓牙周病学杂志》2014年第2期101-104,71,共5页Chinese Journal of Conservative Dentistry

基　　金：天津市卫生局科技基金课题(2010KZ102)

摘　　要：目的:比较4种根管冲洗剂对清除根管玷污层的效果。方法:将40个离体单根管上颌前牙随机分为4组(n=10),A组:常温次氯酸钠(NaOCl)+EDTA;B组:常温NaOCl+EDTA+声波(EndoActivator);C组:60℃NaOCl+EDTA;D组:60℃NaOCl+EDTA+EndoActivator。用热场发射扫描电子显微镜评估根上1/3,根中1/3和根尖1/3玷污层清除情况。结果:对玷污层的整体清除效果C、D组优于A、B组(P<0.05),C组和D组之间、A组和B组之间无显著差异(P>0.05)。结论:60℃NaOCl+EDTA清除玷污层的效果优于常温NaOCl+EDTA的效果;NaOCl+EDTA配合或者不配合声波振动玷污层的清除效果相似。AIM ： To compare the effects of 4 different irrigation protocols in smear layer removal. METH- ODS ： 40 extracted single - rooted maxillary anterior teeth were randomly divided into 4 groups （ n = 10） and were irri- gated respectively with room temperature sodium hypochlorite（NaOCl） ＋ EDTA （group A） ; room temperature NaOCl ＋ EDTA ＋ EndoActivator （ group B ） ; 60 ℃ NaOCl ＋ EDTA （ group C） and 60 ℃ NaOCl ＋ EDTA ＋ EndoActivator （ group D）. After preparation, the samples were examined under a thermal field emission scanning electron microscope at the coronal, middle and apical thirds. RESULTS ： Smear layer removal effects of group C and group D was signifi- cantly better than those of group A and group B （P 〈 0.05 ）. No significant difference was observed between group C and group D, or between group A and group B （P 〉 0.05）. CONCLUSION ： Higher temperature can increase smear layer removal efficacy of the irrigants NaOCl plus EDTA, sonic agitation does not enhance the effect.

关 键 词：根管冲洗 次氯酸钠 EndoActivator 玷污层 

分 类 号：R781.05[医药卫生—口腔医学]