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| Easyshape和Mtwo两种镍钛预备系统对后牙弯曲根管预备效果比较 |
| Comparasion on root canal preparation of molars with Easyshape and Mtwo rotary nickel-titanium instruments |
| 投稿时间：2013-03-07 修订日期：2013-03-07 |
| DOI： |
| 中文关键词: 根管预备,根管偏移,Easyshape镍钛系统 Mtwo镍钛系统 |
| 英文关键词:root canal preparation,root canal transportation ,Easyshape nickel-titanium instruments, Mtwo nickel-titanium instruments |
| 基金项目:上海市科学技术委员会项目(08DZ2271100和08JC1414500) |
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| 中文摘要: |
| 目的：研究比较Easyshape和Mtwo机动镍钛预备系统对后牙弯曲根管预备的效果。方法：将临床拔除的完整第一、二磨牙随机分成两组：A组用Mtwo镍钛系统进行根管预备,B组用Easyshape镍钛系统进行根管预备,两组统一采用全长预备法进行根管预备:Mtwo器械组预备由#10锉扩大至#25,Easyshape器械组预备由#15锉扩大至#30号;比较预备时间、预备前后X线片上扩大锉尖偏移的距离,用SAS9.0软件进行Wilcoxon检验方法统计分析。结果：(1)Mtwo器械组预备平均用时145s；Easyshape器械组预备平均用时156s,两组比较,差异无统计学意义(P>0.05)。(2)离体牙预备前后X线片比较,两组根管偏移,差异无统计学意义(P>0.05)。结论：Easyshape镍钛系统与Mtwo镍钛系统对后牙弯曲根管的预备效果无明显差异。 |
| 英文摘要: |
| [Abstract]PURPOSE To evaluate the effect of molar root canal preparation with Easyshape and Mtwo nickel-titanium.
METHODS A total of 34 intact molars were divided into two groups：one was the Mtwo-group marked A;and group B was the Easyshape-group,while in Mtwo-group roots were prepared from #10 to #25 and in Easyshape-group roots were prepared from #15 to #30.Preparation time ,root canal transportation based on x-ray films before and after operation were compared.Data were analyzed by SAS9.0 with the Wilcoxon Test.RESULTS:1.In Mtwo-group，the average preparation time is 145 seconds，while the time of Easyshape-group is 156 seconds.The difference was not statistically significant (P > 0.05). (2) The root canal transportation between the two groups was no statistical significance (P > 0.05).CONCLUTION:In this experiment,the Easyshape rotary nickel-titanium instruments had no significant differences on root canal preparation of molars compaired with Mtwo rotary nickel-titanium instruments.
KEY WORDS: root canal preparation,root canal transportation ,Easyshape nickel-titanium instruments， Mtwo nickel-titanium instruments |
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