Title

Stress distribution analysis of miniplates used in mandibular fracture fixation: An in vitro study

Authors

Jiwanasha Manish Agrawal¹, Pratesh Dholabhai², Ankita Shrivastava³, M. Rajasekar⁴, Nikil Kumar Jain⁵,* & Sameer Gupta⁶

Affiliation

¹Department of Orthodontics and Dentofacial Orthopaedics, Bharati Vidyapeeth (Deemed to be) University, Dental college and Hospital, Sangli, Maharashtra, India; ²Department of Oral and maxillofacial surgery, K. M. Shah Dental College and hospital Sumandeep Vidhyapeeth Deemed to be university, Waghodia, Vadodara, India; ³Department of Dentistry Gajra Raja Medical College, Gwalior, Madhya Pradesh, India; ⁴Department of Oral and Maxillofacial surgery, Esic dental college and hospital, Sedam road, Kalaburagi, India; ⁵Department of Oral and Maxillofacial Surgery, Yogita Dental College and Hospital, Khed, Maharashtra, India; ⁶Department of Oral & Maxillofacial Surgery, Inderprastha Dental College and Hospital, Sahidabad, Ghaziabad, Uttar Pradesh, India; *Corresponding author

Email

Jiwan Asha Agrawal - E-mail: drjiwanashaagrawal@gmail.com

Pratesh Dholabhai - E-mail: pratesh1994@gmail.com

Ankita Shrivastava - E-mail: dr.ankita2909@gmail.com

M. Rajasekar - E-mail: rajaomfs17@gmail.com

Nikil Kumar Jain - E-mail: nikiljainomfs@gmail.com

Sameer Gupta - E-mail: sameer.gupta83@yahoo.in

Article Type

Research Article

Date

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

Abstract

Achieving optimal mechanical stability while minimizing stress concentration remains a major challenge in the fixation of mandibular angle fractures. Therefore, it is of interest to evaluate the stress distribution and fracture segment displacement of four miniplate fixation designs using 48 standardized polyurethane mandibular angle fracture models subjected to vertical loading. Three dimensional strut miniplates showed the lowest peak strain (812.7 ± 93.8 με), least fracture-gap displacement (0.32 ± 0.05 mm) and highest load resistance at 1-mm displacement (274.6 ± 31.9 N), significantly outperforming the other fixation systems (p<0.001). Dual straight and locking miniplates provided greater mechanical stability than a single superior straight miniplate but showed less uniform stress distribution than the three-dimensional configuration. Thus, data shows that three-dimensional strut miniplates offer superior biomechanical performance and may provide more stable fixation for mandibular angle fractures.

Keywords

Mandibular fracture, miniplate fixation, stress distribution, in vitro study, three-dimensional miniplate, biomechanics

Citation

Agrawal et al. Bioinformation 22(7): 4153-4158 (2026)

Edited by

Hiroj Bagde

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.