[1]陈晓燕,马 琰,邱申彩,等. 应用显微CT评估两种镍钛锉预备重度弯曲根管成形能力的实验研究[J].中国美容医学,2019,(01):122-125.
　CHEN Xiao-yan,MA Yan,QIU Shen-cai,et al. Experiment Research on Evaluating the Shapping Ability of Two Nickel-TitaniumInstruments to Prepare Severely Curved Canals with Micro-CT[J].Medical Aesthetics and Beauty,2019,(01):122-125.
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 应用显微CT评估两种镍钛锉预备重度弯曲根管成形能力的实验研究
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《中国美容医学》[ISSN:1008-6445/CN:61-1347/R]

卷:
期数:
2019年01期
页码:
122-125
栏目:
出版日期:
2019-01-15

文章信息/Info

Title:
 Experiment Research on Evaluating the Shapping Ability of Two Nickel-Titanium
Instruments to Prepare Severely Curved Canals with Micro-CT
文章编号:
1008-6455(2019)01-0122-04
作者:
陈晓燕; 马 琰; 邱申彩; 舍玉秀; 吴佩玲
Author(s):
CHEN Xiao-yan; MA Yan; QIU Shen-cai; SHE Yu-xiu; WU Pei-ling
关键词:
[关键词]根管治疗; 根管预备; Micro-CT; 根管偏移; 牙本质厚度
Keywords:
Key words: root canal treatment ; root canal preparation; micro–computed tomographic imaging;  root canal transportation; dentinthickness
分类号:
R781.33
文献标志码:
A
摘要:
[摘要]目的：使用显微CT（micro-computde tomographic imaging，Micro-CT）扫描成像系统，观察比较ProTaper Next
（PTN）和Twisted Files Adaptive（TFA）预备下颌磨牙近中弯曲根管的成形能力。方法：20颗近期拔除的具有两个独立且
呈25°～35°近中根管的下颌磨牙，采用两种机用根管锉系统进行根管预备，Micro-CT扫描并三维重建根备前后并成像，对
以下参数分析：根管容积、表面积、根管偏移、根管/根宽度比和预备时间。结果：PTN平均偏移范围为0.038～0.174mm，
TFA为0.079～0.197mm，在各水平评估的参数的统计学比较无显著性差异（P ＞0.05）。根管预备完成后，所有根管在观测水
平的根管宽度都不超过根宽的35%。结论：应用Micro-CT系流评估，PTN和TFA在根管偏移和对中能力上具有相似结果，两种
器械没有出现过度切削牙本质，降低了根折的风险。

Abstract:
Abstract: Objective ProTaper Next (PTN) and Twisted Files Adaptive (TFA) systems were used to prepare the proximal and
medial curved root canals of mandibular molars. Micro-CT scans were used to compare the shapping ability. Methods A
total of 20 with two independent 25°to 35°curved mesial root canals of extracted first mandibular molars were scanned using
micro-CT imaging before and after root canal preparation with the 2 instrument systems.Three-dimensional reconstruction and
analysis of image data before and after root preparation.The following parameters: root canal volume, surface area, root canal
transportation, root canal/root width ratio, and preparation time. Results The ProTaper Next averaged transportation range
was 0.038 to 0.174mm, and the TFA was 0.079 to 0.197mm. There was no statistically significant difference in the parameters
evaluated at each level (P ＞0.05). After root canal preparation, the root canal width of all root canals at the observation level did
not exceed 35% of the root width. Conclusion PTN and TFA have similar results in root canal transportation and center ratio.
Both instruments do not have excessive cutting dentin and reduce the risk of root fracture.

相似文献/References:

[1] 唐 兰,王 强,杜 芹. Mtow镍钛锉机扩与K3机用镍钛系统治疗牙髓炎的近远期效果研究[J].中国美容医学,2020,(6):147.
　 TANG Lan,WANG Qiang,DU Qin. Short-term and Long-term Effects of Mtow Nickel Titanium Rotary File and K3Machine-used Nickel-titanium System in the Treatment of Pulpitis[J].Medical Aesthetics and Beauty,2020,(01):147.
[2]余 洋.两种镍钛器械对模拟弯曲根管预备效果的比较研究[J].中国美容医学,2023,(1):149.
　YU Yang.Comparative Study on the Preparation Effect with Two Types of Nickel-titanium Rotary Instruments in Simulated Curved Root Canals[J].Medical Aesthetics and Beauty,2023,(01):149.

更新日期/Last Update: 2019-02-01