Effects of Three Different Niti Rotary Instruments on Dentin Cracks After Root Canal Preparation.

Q4 Dentistry

Journal of Dental Research, Dental Clinics, Dental Prospects Pub Date : 2026-06-30 eCollection Date: 2026-06-01 DOI:10.34172/joddd.42346

Rhona Mariana Untari, Wignyo Hadriyanto, Rachmat Sriwijaya, Margareta Rinastiti

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引用次数: 0

Abstract

Introduction: This study aimed to examine the effects of three distinct nickel-titanium (NiTi) rotary instruments on dentin crack formation during root canal preparation in various root segments.

Methods: Thirty premolars with a single straight root canal were prepared using three rotary instruments, namely, ProTaper Next, ProTaper Gold, and HyFlex Controlled Memory (CM).

Results: The ProTaper Next produced the most dentin cracks, whereas HyFlex CM produced the fewest. Most cracks occurred in the coronal third of the root compared with the middle third. Dentin crack formation is a significant problem in root canal treatment and can lead to treatment failure. Therefore, an appropriate rotary instrument and technique for root canal preparation must be selected to minimize the risk of dentin crack formation.

Conclusion: The results can guide clinicians in selecting the most suitable rotary instrument for successful endodontic treatment. In addition, irrigating with 2.5% NaOCl and saline for 1 min after preparation could help reduce the incidence of dentin cracks. Further research can explore new methods to minimize the risk of dentin crack formation during root canal preparation and improve the success rate of endodontic treatment.

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三种不同镍钛旋转器械对根管预备后牙本质裂纹的影响。

简介：本研究旨在研究三种不同的镍钛（NiTi）旋转器械对不同根段根管预备过程中牙本质裂纹形成的影响。方法：采用ProTaper Next、ProTaper Gold、HyFlex Controlled Memory （CM）三种旋转器械制备单根管直管前磨牙30颗。结果：ProTaper Next产生的牙本质裂纹最多，HyFlex CM产生的牙本质裂纹最少。大多数裂缝发生在冠状三分之一的根部，而不是中间三分之一。牙本质裂纹的形成是根管治疗中的一个重要问题，并可能导致治疗失败。因此，必须选择合适的旋转器械和技术进行根管准备，以尽量减少牙本质裂缝形成的风险。结论：该结果可指导临床医生选择最合适的旋转器械，实现牙髓治疗的成功。制备后用2.5% NaOCl和生理盐水冲洗1 min，可减少牙本质裂纹的发生。进一步的研究可以探索新的方法来降低根管准备过程中牙本质裂纹形成的风险，提高根管治疗的成功率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Dental Research, Dental Clinics, Dental Prospects Dentistry-General Dentistry

CiteScore

1.40

自引率

0.00%

发文量

审稿时长

25 weeks

期刊介绍： Journal of Dental Research Dental Clinics Dental Prospects (JODDD) is a Platinum* Open Access, peer-reviewed quarterly indexed journal that publishes articles of basic, clinical, and prospective nature in all areas of dentistry and oral health.