3种机用单支锉镍钛系统对弯曲根管中心定位能力的比较

doi:10.3969/j.issn.1674-8115.2022.05.020

上海交通大学学报（医学版） ›› 2022, Vol. 42 ›› Issue (5): 690-694.doi: 10.3969/j.issn.1674-8115.2022.05.020

• 短篇论著 • 上一篇

3种机用单支锉镍钛系统对弯曲根管中心定位能力的比较

李婷婷(), 潘悦萍()

上海交通大学医学院附属第九人民医院牙体牙髓科，上海交通大学口腔医学院，国家口腔医学中心，国家口腔疾病临床医学研究中心，上海市口腔医学重点实验室，上海 200011

收稿日期:2022-01-05 接受日期:2022-04-10 出版日期:2022-05-28 发布日期:2022-05-28
通讯作者: 潘悦萍 E-mail:150409616@qq.com;87521980@qq.com
作者简介:李婷婷（1982—），女，主治医师，硕士；电子信箱：150409616@qq.com。
基金资助:
上海交通大学医学院附属第九人民医院、上海交通大学口腔医学院研究型学科基金(KQYJXK2020)

Comparison of the central positioning ability of three single-file nickel-titanium instruments in simulated curved root canals

LI Tingting(), PAN Yueping()

Department of Endodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology, Shanghai 200011

Received:2022-01-05 Accepted:2022-04-10 Online:2022-05-28 Published:2022-05-28
Contact: PAN Yueping E-mail:150409616@qq.com;87521980@qq.com
Supported by:
Research Discipline Fund from Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, and College of Stomatology, Shanghai Jiao Tong University(KQYJXK2020)

摘要/Abstract

摘要：

目的·比较3种机用单支锉镍钛器械系统VDW Reciproc Blue（简称Blue）、FKG XP-endo shaper（简称XP）及M3-L platinum（简称M3）在预备弯曲根管时维持根管原有弯曲度的能力（即中心定位能力）。方法·选择30个树脂模拟弯曲单根管，随机分为3组（Blue组、XP组和M3组），分别用Blue、XP和M3进行根管预备。预备前后的根管内分别注入红色、蓝黑色墨水并在口腔科手术显微镜下拍摄照片。将预备前后的照片进行重叠，以预备前的根尖为圆心，半径从1 mm开始，每增加1 mm做一同心圆，依次递增至10 mm，使其与重叠图像相交成10条弧线，即10个测量位点，记录根管内外侧10个测量位点的去除量差值的绝对值，对3组之间的差异进行统计分析。预备根管后，用口腔科手术显微镜观察锉体有无拉伸形变。结果·M3组与Blue组之间、M3组与XP组之间根管内外侧去除量差值的绝对值的差异均有统计学意义（P=0.003 1，P=0.002 0），Blue组和XP组之间根管内外侧去除量差值的绝对值的差异无统计学意义（P=0.350 2）。XP组锉体在口腔科手术显微镜下观察到出现解螺旋形变，放置于热水内未恢复原形态，M3组与Blue组锉体未观察到有形变。结论·3种单支镍钛锉对弯曲根管进行预备时均能良好地维持根管原有弯曲度，但Blue和XP较M3有更好地维持弯曲根管原始走向的能力。XP在预备树脂根管时容易出现器械形变，临床上应适当减少XP的使用次数。

关键词: 根管预备, 中心定位能力, 热处理镍钛锉, 弯曲根管, 单支锉镍钛系统

Abstract:

Objective·To compare the ability of VDW Reciproc Blue (Blue), FKG XP-endo shaper (XP) and M3-L platinum (M3) instruments to maintain the original curvature of root canal (i.e. central positioning ability) in preparing curved root canals.

Methods·Thirty resin-simulated curved single root canals were randomly divided into three groups. Root canal preparation was performed with a Blue file, an XP file or an M3 file randomly. Red or blue-black ink was injected into the root canal before and after preparation and photographs were taken under the stomatology surgical microscope. The images before and after preparation were overlapped. The apex of the prepared root was set as a circle center and the radius started at 1 mm. A concentric circle was made every 1 mm increased and sequentially incremented to 10 mm so that it intersected the image to form 10 measurement sites, and then the removal of ten measurement sites on the inside and outside of the root canal was recorded for statistical analysis. After the root canal was prepared the file was observed for tensile deformation under the stomatology surgical microscope.

Results·There was significant difference in the absolute value of the difference between the internal and external removal of root canal between the M3 group and the Blue group, as well as the M3 group and the XP group (P=0.003 1, P=0.002 0); but there was no significant difference between the Blue group and the XP group (P=0.350). The file body of XP group was observed to have de-helix deformation under the stomatology surgical microscope, which did not return to its original shape when placed in hot water, and no deformation was observed in the file body of M3 group and Blue group.

Conclusion·The three kinds of single-file nickel-titanium instruments have good formation ability when preparing the curved root canals. But XP file and Blue file can maintain the original curvature of root canals better than M3 file. XP files are prone to deformation when preparing resin root canal, therefore the use of XP should be appropriately reduced clinically.

Key words: root canal preparation, central positioning ability, heat-treated nickel-titanium, curved root canal, single-file nickel-titanium instrument

中图分类号:

R781.33

李婷婷, 潘悦萍. 3种机用单支锉镍钛系统对弯曲根管中心定位能力的比较[J]. 上海交通大学学报（医学版）, 2022, 42(5): 690-694.

LI Tingting, PAN Yueping. Comparison of the central positioning ability of three single-file nickel-titanium instruments in simulated curved root canals[J]. Journal of Shanghai Jiao Tong University (Medical Science), 2022, 42(5): 690-694.

图/表 2

图1 根管内外侧去除量测量示意图

Fig 1 Schematic diagram of the internal and external root canal removal measurements

表1 3种镍钛系统预备树脂根管后内外侧壁树脂去除量差值绝对值的方差分析

Tab 1 Analysis of variance of the absolute value of resin removal difference between inner and outer side walls of three single-file nickel-titanium instruments after resin root canal preparation

Two groups compared	Absolute value of difference	SEM	P value
Blue vs XP	0.013 9	0.014 6	0.350 2
M3 vs Blue	0.048 1	0.014 6	0.003 1
M3 vs XP	0.062 0	0.014 6	0.000 2

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3种机用单支锉镍钛系统对弯曲根管中心定位能力的比较

Comparison of the central positioning ability of three single-file nickel-titanium instruments in simulated curved root canals

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