可变锥度联合标准锥度的镍钛器械预备“S”形树脂根管的成形效果  

Shaping effects of multi-taper nickel-titanium files combined with nickel-titanium K file in simulated S-shaped canals

作　　者：罗红霞[1] 张岚[2] 谭红[2] 黄定明[2] 

机构地区：[1]四川省第四人民医院口腔科,610016 [2]四川大学华西口腔医学院牙体牙髓科

出　　处：《实用口腔医学杂志》2007年第6期836-839,共4页Journal of Practical Stomatology

基　　金：卫生部临床学科重点建设资助项目(编号:2004-468)

摘　　要：目的:评价可变锥度ProTaper镍钛锉联合标准镍钛K锉在S形树脂根管中的成形效果。方法:选择S形树脂根管30个随机分为3组,分别使用手用ProTaper锉、手用ISO标准镍钛K锉、ProTaper锉联合ISO标准镍钛K锉进行根管预备。分析预备后根管内外侧树脂去除量和根管宽度,评估根管成形效果。结果:ProTaper成形锉去除树脂量在相同型号的器械中最少;ProTaper修形锉对根管弯曲内侧和根尖外侧的树脂去除量最大;ProTaper锉联合标准镍钛K锉对以上部分的树脂去除量最少,预备后的根管宽度从根管口到根尖孔逐渐减小。结论:ProTaper成形锉结合ISO标准镍钛K锉对S形树脂根管有较好的成形效果。Objective-To evaluate the shaping effects of multi-taper ProTaper combined with nickel-titanium（ Ni- Ti） K file in simulated S-shaped canals. Methods：Thirty simulated S-shaped resinous canals were randomly dividecl into three groups and prepared with hand ProTaper, hand Ni-Ti K file, hand ProTaper combined with Ni-Ti K file respectively. The shaping effects were assessed by the amount of material removed from the inner and outer wall of canal as well as the width of canal after instrumentation. Results： The shaping files of ProTaper removed the least material in amount of materials from the same apical dimension. The finishing files of ProTaper removed the most amount of material at the inner side of curvature and outer side of apex. ProTaper combined with Ni-Ti K file removed the least material at the above parts and the widths of canals prepared were gradually decreased from the orifice to the apex. Conclusion：ProTaper combined with Ni-Ti K file exhibited good shaping effects in simulated Sshaped canals.

关 键 词：镍钛器械 弯曲根管 成形效果 

分 类 号：R781.05[医药卫生—口腔医学]