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Advancements in Endodontic Materials: Performance and Durability

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Biomaterials".

Deadline for manuscript submissions: 20 July 2026 | Viewed by 524

Special Issue Editor


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Guest Editor
Pusan National University School of Dentistry, 49 Busandaehak-ro, Mulgeum-eup, Yangsan-si, Gyeongsangnam-do, Republic of Korea
Interests: clinical endodontics; endodontic materials; nickel–titanium file; fatigue fracture; bioceramics
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Special Issue Information

Dear Colleagues,

Thanks to contemporary endodontic materials, the efficiency and effectiveness of modern clinical endodontics has advanced remarkably. By using these contemporary endodontic materials, the clinical success rate and postoperative prognosis of nonsurgical and surgical root canal treatments has increased substantially and, consequently, the ratio of natural teeth preservation has also improved.

In the field of endodontics, contemporary materials, including various brands of bioceramic materials, canal irrigation and obturation materials and devices, post-endodontic restoration materials, and nickel–titanium instruments made of different alloys, have been studied for their properties, performance, durability, and effectiveness. Further studies are needed to collate clinically relevant evidence for recently introduced contemporary endodontic materials.

I invite you to submit a manuscript for publication in this Special Issue, titled “Advancements in Endodontic Materials: Performance and Durability”. Original articles, communications, and review articles are all welcome.

Prof. Dr. Hyeon-Cheol Kim
Guest Editor

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Keywords

  • clinical endodontics
  • endodontic materials
  • nickel–titanium file
  • fatigue fracture
  • bioceramics

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Published Papers (1 paper)

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Research

12 pages, 2118 KB  
Article
File-Specific Cyclic Fatigue Resistance of NiTi Instruments After Repeated Use in Simulated Canals: Patterns Compatible with Potential Stress-Induced Martensite Transformation Effects
by Hyeonu Jo, Sang Won Kwak, Jung-Hong Ha, Asgeir Sigurdsson and Hyeon-Cheol Kim
Materials 2026, 19(5), 866; https://doi.org/10.3390/ma19050866 - 26 Feb 2026
Viewed by 337
Abstract
This study evaluated changes in the number of cycles to fracture (NCF) of Nickel–Titanium (NiTi) files after repeated use in simulated canals and investigated the potential relationship with stress-induced martensite (SIM) transformation effect. A total of 225 ProTaper Ultimate (PTUL) files were divided [...] Read more.
This study evaluated changes in the number of cycles to fracture (NCF) of Nickel–Titanium (NiTi) files after repeated use in simulated canals and investigated the potential relationship with stress-induced martensite (SIM) transformation effect. A total of 225 ProTaper Ultimate (PTUL) files were divided into three groups: Group 1 consisted of new files, Group 2 comprised files used to shape two resin simulated canals, and Group 3 consisted of files used to shape four canals. The simulated resin canals with a 16 mm length of J-shaped with 35° curvature were prepared using PTUL Slider, Shaper, F1, F2, and F3 files sequentially. After instrumentation, the cyclic fatigue resistance of each sequential file was assessed in a 35° curved steel canal by rotating at 400 rpm using a custom-made device. Statistical analysis was performed using one-way ANOVA with Tukey’s post hoc test or Kruskal–Wallis with Dunn’s test with Bonferroni correction for parametric and non-parametric data, respectively. Slider and Shaper maintained stable NCF across all groups (p > 0.05). In contrast, F1 showed a transient increase (117.7%) after two uses but declined significantly (91.6%) after four uses (p < 0.05). F2 and F3 demonstrated progressive NCF reductions (F2: 72.9%; F3: 71.5% after four uses), with F3 showing the most pronounced decline (p < 0.05). Repeated use of NiTi files reduced their cyclic fatigue resistance in a file-specific manner, with larger finishing files most affected. The distinctive F1 pattern suggests potential preload-related or SIM transformation effects that warrant further metallurgical investigation. Full article
(This article belongs to the Special Issue Advancements in Endodontic Materials: Performance and Durability)
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