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The extended finite element method in endodontics: A scoping review and future directions for cyclic fatigue testing
Philip Yuan-Ho Chien1, Laurence James Walsh1, Ove Andreas Peters1
1The University of Queensland, School of Dentistry, UQ Oral Health Centre, Herston, QLD, Australia.
Objectives:
The present study reviews the current literature regarding the utilization of the extended finite element method (XFEM) in clinical and experimental endodontic studies and the suitability of XFEM in the assessment of cyclic fatigue in rotary endodontic nickel-titanium (NiTi) instruments.
Material And Methods:
An electronic literature search was conducted using the appropriate search terms, and the titles and abstracts were screened for relevance. The search yielded 13 hits after duplicates were removed, and four studies met the inclusion criteria for review.
Results:
No studies to date have utilized XFEM to study cyclic fatigue or crack propagation in rotary endodontic NiTi instruments. Challenges such as modelling material inputs and fatigue criteria could explain the lack of utilization of XFEM in the analysis of mechanical behavior in NiTi instruments.
Conclusions:
The review showed that XFEM was seldom employed in endodontic literature. Recent work suggests potential promise in using XFEM for modelling NiTi structures.
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