Title

Canine stress analysis of two clear aligner attachment designs: A finite element study

Authors

Y Sarita^1,*, Sunil Sharma², Anurag Tiwari¹, Jayant Chandrakar³, Nishu Singh⁴ & Amit Kumar⁵

Affiliation

¹Department of Orthodontics and Dentofacial Orthopedics, NIMS Dental College & Hospital, NIMS University Rajasthan, Jaipur, India; ²Department of Oral & Maxillofacial Surgery, NIMS Dental College & Hospital, NIMS University Rajasthan, Jaipur, India; ³Department of Orthodontics and Dentofacial Orthopedics, Maitri College of Dentisrty and Reserch Centre, Anjora (Durg) Chhattishgarh, India; ⁴Department of Conservative Dentistry and Endodontics, Hazaribag College of Dental Sciences and Hospital, Jharkhand, India; ⁵Department of Oral & Maxillofacial Surgery, Sarjug Dental College and Hospital, Darbhanga, Bihar, India; *Corresponding author

Email

Y Sarita - E-mail: phd@nimsuniversity.org; Phone: +91 8539922688
Sunil Sharma - E-mail: provcnimsuniversity@gmail.com; Phone: +91 9982683023
Anurag Tiwari - E-mail: dranuragtiwari86@gmail.com; Phone: +91 9926992979
Jayant Chandrakar - E-mail: chjayant14@gmail.com; Phone: +91 9131972866
Nishu Singh - E-mail: nishusingh0492@gmail.com; Phone: +91 9039282310
Amit Kumar - E-mail: sinhaamit735@gmail.com; Phone: +91 9973690989

Article Type

Research Article

Date

Received March 1, 2026; Revised March 31, 2026; Accepted March 31, 2026, Published March 31, 2026

Abstract

A finite element analysis compared the stress distribution profiles of a single rectangular attachment against a dual semicircular configuration to resolve the biomechanical intricacies of achieving bodily canine translation with clear aligners. Hence, three-dimensional model of the maxilla was generated to simulate stress propagation across the teeth, periodontal ligament and alveolar bone under standardized loading conditions. Von mises stress assessment revealed that the rectangular geometry induced markedly higher stress concentrations (0.1922 MPa), suggesting an elevated risk of root resorption and appliance fatigue. Conversely, the dual semicircular design exhibited enhanced biomechanical efficiency, demonstrating a 27% reduction in stress magnitude (0.1411 MPa) and minimized localized pressure. These data advance clinical understanding by establishing dual semicircular attachments as a safer, more effective modality for predictable canine movement.

Keywords

Clear aligners, composite attachments, finite element analysis (FEA), orthodontic tooth movement, biomechanics

Citation

Sarita et al. Bioinformation 22(3): 1593-1596 (2026)

Edited by

Rashmi Laddha

ISSN

0973-2063

Publisher

Biomedical Informatics

License

This is an Open Access article which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. This is distributed under the terms of the Creative Commons Attribution License.