ProTaper和K3预备对上颌前磨牙根管形态影响的研究

›› 2016, Vol. 36 ›› Issue (1): 68-70.

ProTaper和K3预备对上颌前磨牙根管形态影响的研究

夏庆银

泰安市口腔医院

收稿日期:2014-10-06 修回日期:2015-03-13 出版日期:2016-01-28 发布日期:2016-01-08
通讯作者: 夏庆银 E-mail:kqyy7855@163.com

Comparative evaluation of the shaping abilities of ProTaper and K3 on root canal morphology of premolars

Received:2014-10-06 Revised:2015-03-13 Online:2016-01-28 Published:2016-01-08

摘要/Abstract

摘要： 目的　比较ProTaper和K3预备对根管形态的影响。方法　选取正畸减数拔除含颊舌双根管的上颌前磨牙40颗,随机分为2组，分别采用机用镍钛器械ProTaper和K3预备根管,预备前、后进行三维成像,记录预先设立的根管横断面、颊舌向切面、近远中向切面三个位点的三维数据，评价根管预备的效果。结果　K3组相对于ProTaper组对牙本质的切削量少，对根管形态的影响较小，ProTaper组和K3组有显著性差异（P＜0.01）；结论　K3组预备后的根管形态优于ProTaper组。K3预备后能较好的保持根管形态，对根管壁牙本质的切削量少，较少地削弱了余留牙体组织的抗折力。

关键词: ProTaper, K3, 根管成型, 抗折力, CBCT

Abstract: ［Abstract］ Objective To evaluate the root canal shaping abilities of ProTaper and K3 . Methods A total of 40 extracted maxillary premolars each with two root canals were divided into two groups，one prepared by ProTaper and the other by K3 rotary instruments. 3D imaging was made respectively before and after preparation. Recording the 3D data of three loci of the cross section,buccolingual plane and the mesial and distal section.The efficiency of preparation was analyzed by three-dimensional imaging. Results Compared to ProTaper, the cutting ability on dentin of K3 was a little inferior, significant difference was found between the two groups (P<0.01). Conclusion The shape of root canals after preparation of K3 were better than ProTaper. The dentin removal was less，which Less weaken the resistance of remaining tooth structure.

Key words: ProTaper, K3, shaping abilities, bending force, CBCT

中图分类号:

R781.05

夏庆银. ProTaper和K3预备对上颌前磨牙根管形态影响的研究[J]. , 2016, 36(1): 68-70.

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