Evidence map›Paper›PMID 41851676›Full record

ArticleBMC oral health2026

Comparison of cyclic fatigue properties of four nickel-titanium single-file systems in curved artificial canals.

Jian Wang, Zhaowei Tai, Xuechun Wang, Junli Han, Jiang Tao

Abstract read
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In one paragraph

Article in BMC oral health, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

5 authors.

Jian Wang *Department of General Dentistry, 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 Research Institute of Stomatology; Research Unit of Oral and Maxillofacial Regenerative Medicine, Chinese Academy of Medical Sciences, Shanghai, China.ORCID http://orcid.org/0000-0002-2617-7969
Zhaowei Tai *Department of General Dentistry, 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 Research Institute of Stomatology; Research Unit of Oral and Maxillofacial Regenerative Medicine, Chinese Academy of Medical Sciences, Shanghai, China.
Xuechun WangDepartment of Oral and Cranio-maxillofacial Surgery, 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 Research Institute of Stomatology; Research Unit of Oral and Maxillofacial Regenerative Medicine, Chinese Academy of Medical Sciences, Shanghai, China.
Junli HanDepartment of General Dentistry, 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 Research Institute of Stomatology; Research Unit of Oral and Maxillofacial Regenerative Medicine, Chinese Academy of Medical Sciences, Shanghai, China. hanjunli@sina.com.
Jiang TaoDepartment of General Dentistry, 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 Research Institute of Stomatology; Research Unit of Oral and Maxillofacial Regenerative Medicine, Chinese Academy of Medical Sciences, Shanghai, China. taojiang_doctor@sjtu.edu.cn.

Funding

Shanghai Sailing Program 21YF1424100
6 · The paper itself

Abstract

backgroundsNickel-titanium (NiTi) rotary instruments are widely used in endodontics because of their flexibility and superelasticity. However, the cyclic fatigue resistance of ORODEKA and M3-L systems in curved canals remains unclear. This study aimed to evaluate and compare the cyclic fatigue resistance of four single-file NiTi systems: Reciproc Blue (REC), ORODEKA ONEPLEX (ORO), M3-L 2018 (M3L), and TruNatomy (TRU)—in artificial root canals with varying curvature angles (45°, 60°, and S-shaped). Understanding their performance under mechanical stress can help clinicians select appropriate instrument for complex root canal anatomies. MATERIALS AND

methodsfour single-file systems were tested in static simulated canals with 45°, 60°, and S-shaped curvatures. The instruments were rotated at manufacturer-recommended speeds until fracture using a customized cyclic fatigue testing device. The number of cycles to failure (NCF) was recorded for each instrument. one-way analysis of variance (ANOVA) and Tukey’s honestly significant difference (HSD)(post-hoc test) were used for statistical comparisons.

resultsTruNatomy (TRU) exhibited significantly higher NCF values across all canal models compared with the other systems (p < 0.05). Reciproc Blue (REC) demonstrated superior performance over ORODEKA (ORO) and M3-L (M3L), particularly in the 60° subgroup, where no significant difference was observed between REC and TRU (p > 0.05). This study provides a comparative analysis of the cyclic fatigue resistance of four single-file systems. TruNatomy demonstrated a significantly higher fatigue resistance than the other three systems, highlighting its superior performance in curved canals.

conclusionsThese findings suggest that TruNatomy is a reliable option for managing complex root canal anatomies. However, further research is required to investigate additional factors influencing the mechanical behavior of NiTi instruments and to optimize their clinical application in endodontic practice.

Indexed as

Cyclic fatigue resistanceNickel-titanium instrumentReciproc blueSingle-fileTruNatomy

Identifiers

PMID41851676
PMCPMC13112737

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.