Case Report
Copyright ©The Author(s) 2025. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Clin Cases. Jun 26, 2025; 13(18): 101545
Published online Jun 26, 2025. doi: 10.12998/wjcc.v13.i18.101545
Improved superelastic Ni–Ti alloy wire for treating skeletal class III malocclusion combined with anterior crossbite: A case report
Yu-Hsiang Sean Chang, Yuan-Hou Chen, Jian-Hong Yu
Yu-Hsiang Sean Chang, Yuan-Hou Chen, Jian-Hong Yu, Department of Orthodontics, China Medical University Hospital, Taichung 404022, Taiwan
Jian-Hong Yu, School of Dentistry, China Medical University, Taichung 40402, Taiwan
Author contributions: Chang YHS was responsible for conception and design of the study, data collection and analysis, drafting and revising the manuscript; Chen YH was responsible for critical revision of the manuscript for important intellectual content and clinical supervision; Yu JH was responsible for study supervision, manuscript review and editing; all of the authors read and approved the final version of the manuscript to be published.
Informed consent statement: Written informed consent was obtained from the patient and/or their legal guardian for the publication of this case report and accompanying images.
Conflict-of-interest statement: The authors declare no conflicts of interest related to this manuscript.
CARE Checklist (2016) statement: The authors have read the CARE Checklist (2016), and the manuscript was prepared and revised according to the CARE Checklist (2016).
Open Access: This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: https://creativecommons.org/Licenses/by-nc/4.0/
Corresponding author: Jian-Hong Yu, Doctor, PhD, Dean, School of Dentistry, China Medical University, No. 91 Xueshi Road, North District, Taichung 404022, Taiwan. kenkoyu@mail.cmu.edu.tw
Received: September 18, 2024
Revised: January 23, 2025
Accepted: February 17, 2025
Published online: June 26, 2025
Processing time: 161 Days and 18.2 Hours
Core Tip

Core Tip: Correcting skeletal class III malocclusion with anterior crossbite in adolescents can be challenging. In this case, a 17-year-old male with an underbite was successfully treated using improved superelastic Ni–Ti alloy wire (ISW), intermaxillary elastics, and ISW unilateral multi-bend edgewise archwire. These techniques corrected the anterior crossbite, aligned the midline, and achieved proper overjet and overbite. The treatment lasted approximately one year and five months, with a stable outcome observed after one year of follow-up. This case demonstrates that skeletal Class III malocclusion in adolescents can be addressed effectively with minimally invasive orthodontic methods.