Effects of Flat-Side Design on Torsional and Bending Stress of Nickel–Titanium File by Finite Element Analysis
Yinjie Yang, Xinfang Cao, Jiwu Zhang, Yuqing Zhou, Songhao Chen, Benxiang Hou · 2026
Read Effects of Flat-Side Design on Torsional and Bending Stress of Nickel–Titanium File by Finite Element Analysis by Yinjie Yang, Xinfang Cao, Jiwu Zhang, Yuqing Zhou, Songhao Chen, Benxiang Hou (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-13295515.txt.
Description
Yinjie Yang and colleagues use computer stress models to test a flattened design for root canal files, in a 2026 dental engineering study. Nickel-titanium files shape infected root canals, and they snap in two ways: twisting when the tip jams, and fatigue from spinning in curves. A flat side is sold as adding bend, so the team modeled a new flat-side file and a standard round one.
Both files were twisted and bent through mock canal curves of forty-five and sixty degrees. The standard file stood up to twisting better. At the gentler bend the flat file flexed more smoothly, peaking at lower inner stress. At the sharper bend the picture flipped with load direction, and the flat design piled stress in spots. The authors advise care before dentists take up such files widely.
Catalog record
| CREATOR | Yinjie Yang, Xinfang Cao, Jiwu Zhang, Yuqing Zhou, Songhao Chen, Benxiang Hou |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 20 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |