XP-endo Shaper和ProTaper Next对弯曲根管成形能力及微裂纹形成的影响

doi:10.19439/j.sjos.2023.03.001

上海口腔医学 ›› 2023, Vol. 32 ›› Issue (3): 225-229.doi: 10.19439/j.sjos.2023.03.001

XP-endo Shaper和ProTaper Next对弯曲根管成形能力及微裂纹形成的影响

封菲^1,2, 曹立群^1,2, 张旗¹

1.同济大学口腔医学院牙体牙髓病学教研室,上海牙组织再生与修复工程技术研究中心,上海 200072;
2.上海市口腔医院牙体牙髓病科,上海市颅颌面发育与疾病重点实验室,上海 200031

收稿日期:2022-02-18 修回日期:2022-05-11 出版日期:2023-06-25 发布日期:2023-06-28
通讯作者: 张旗,E-mail: qizhang@tongji.edu.cn
作者简介:封菲(1994-),女,硕士,E-mail: 346096626@qq.com
基金资助:
国家自然科学基金(81870760、81570966); 中央高校基本科研业务费专项资金(22120190217)

Comparative study of two novel nickel-titanium instruments for root canal preparation in curved canals on shaping ability and microcrack formation

FENG Fei^1,2, CAO Li-qun^1,2, ZHANG Qi¹

1. Department of Dentistry and Endodontics, School of Stomatology, Tongji University, Shanghai Engineering Research Center for Dental Tissue Regeneration and Restoration. Shanghai 200072;
2. Department of Dentistry and Endodontics, Shanghai Stomatology Hospital & School of Stomatology, Fudan University; Shanghai Key Laboratory of Craniomaxillofacial Development and Disease, Fudan University. Shanghai 200031, China

Received:2022-02-18 Revised:2022-05-11 Online:2023-06-25 Published:2023-06-28

摘要/Abstract

摘要： 目的：运用显微CT（Micro-CT）评价ProTaper Next(PTN)和XP-endo Shaper(XPS)对弯曲根管成形能力及微裂纹形成的影响。方法：收集16颗2个独立近中根管的下颌磨牙,共32个根管,弯曲度为25°~35°。采用2种新型镍钛器械(PTN和XPS)进行预备,记录预备时间。预备前、后用Micro-CT扫描,并进行三维重建,对根管偏移、轴中心率、体积增加量、管/根宽度比和微裂纹发生率进行分析。采用SPSS 22.0软件包对数据进行统计学分析。结果：预备后XPS组在距根尖1、3、5、7 mm水平根管偏移较PTN组小,在1、3、7 mm水平轴中心率较PTN高,具有统计学差异（P<0.05）,轴中心率在5 mm水平两者无显著性差异（P>0.05）。XPS组预备时间显著少于PTN组（P<0.05）。2种器械预备后体积增加量、管/根宽度比无显著差异（P>0.05）。2种器械预备后均无新裂纹产生。结论：PTN与XPS均能安全、有效预备下颌磨牙重度弯曲根管,而XPS在预备成形方面具有更好的中心定位性及更高的预备效率。

关键词: 新型镍钛器械, 弯曲根管, 根管预备, 成形能力, 微裂纹

Abstract: PURPOSE: To evaluate the shaping ability and microcrack formation of ProTaper Next (PTN) and XP-endo Shaper (XPS) systems in the mesial curved root canals of mandibular molars by using micro-CT scans. METHODS: Sixteen mandibular molars with two independent mesial root canals and curvature ranging from 25° to 35° were randomly divided into two groups. The preparation time was recorded. Pre-and-postoperative images were scanned by micro-CT. The following parameters were evaluated: canal transportation, centering ratio, changes in canal volume, canal/root width ratio and microcrack formation. SPSS 22.0 software package was used to analyze the data. RESULTS: Significant difference (P <0.05) was found for canal transportation at the section of 1, 3, 5, 7 mm from the apical foramen and centering ratio at the section of 1, 3, 7 mm from the apical foramen, where XPS files were superior. There was no significant difference for centering ratio at the section of 5 mm from the apical foramen(P>0.05). XPS groups significantly consumed less time during the preparation(P<0.05). There was no significant difference between the two groups for the increase amount of volume, and canal/root width ratio(P>0.05). Both instruments did not induce new microcrack after preparation. CONCLUSIONS: PTN and XPS can both shape curved canals effectively and safely. XPS showed better centering ability and reduced preparation time during preparation.

Key words: New thermo-mechanical nickel-titanium instrument, Curved canal, Root canal preparation, Shaping ability, Microcrack

中图分类号:

R781.3

封菲, 曹立群, 张旗. XP-endo Shaper和ProTaper Next对弯曲根管成形能力及微裂纹形成的影响[J]. 上海口腔医学, 2023, 32(3): 225-229.

FENG Fei, CAO Li-qun, ZHANG Qi. Comparative study of two novel nickel-titanium instruments for root canal preparation in curved canals on shaping ability and microcrack formation[J]. Shanghai Journal of Stomatology, 2023, 32(3): 225-229.

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XP-endo Shaper和ProTaper Next对弯曲根管成形能力及微裂纹形成的影响

Comparative study of two novel nickel-titanium instruments for root canal preparation in curved canals on shaping ability and microcrack formation

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