Improved superelastic Ni-Ti alloy wire for treating skeletal class III malocclusion combined with anterior crossbite:A case report  

作　　者：Yu-Hsiang Sean Chang Yuan-Hou Chen Jian-Hong Yu 

机构地区：[1]Department of Orthodontics,China Medical University Hospital,Taichung 404022,Taiwan [2]School of Dentistry,China Medical University,Taichung 40402,Taiwan

出　　处：《World Journal of Clinical Cases》2025年第18期34-45,共12页世界临床病例杂志(英文)

摘　　要：BACKGROUND Correcting skeletal class III malocclusion with anterior crossbite in adolescents using only orthodontic treatment poses challenges.This report highlights a novel approach leveraging improved superelastic Ni-Ti alloy wire(ISW)to address these conditions effectively.CASE SUMMARY A 17-year-old male patient presented with the chief complaint of an underbite.The patient was given a diagnosis of skeletal class III malocclusion and anterior crossbite.The orthodontic treatment plan was implemented and did not require teeth extractions or orthognathic surgery.Key interventions involved the app-lication of ISW,intermaxillary elastics,and ISW unilateral multi-bend edgewise archwire.The unique combination of these techniques enabled the correction without the need for extractions or surgery.This approach leverages the advanced biomechanical properties of ISW,including its super-elasticity and shape memory,to enhance treatment efficacy.The treatment lasted 17 months,and major improvements in overjet,overbite,and alignment were achieved.The results were favorable,and stability was discovered during follow-up.CONCLUSION The application of ISW for treating skeletal class III malocclusion with anterior crossbite in a 17-year-old male patient resulted in exceptional outcomes.The treatment led to a marked improvement in the patient’s facial profile and to proper overjet,overbite,and midline alignment.These results were maintained over a one-year follow-up,indicating that a minimally invasive orthodontic approach can effectively address complex skeletal discrepancies in adolescent patients.This case illustrates that with the careful use of advanced orthodontic techniques,major skeletal challenges can be resolved without resorting to surgical procedures.

关 键 词：Orthodontics Skeletal class III malocclusion Anterior crossbite Improved superelastic Ni-Ti alloy wire Multi-bend edgewise archwire Intermaxillary elastics Case report 

分 类 号：TG1[金属学及工艺—金属学]