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81 江宜庭 / I-Ting Chiang
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81 江宜庭 / I-Ting Chiang
Taiwan
Main Instructor Yi-Horng Chen
Department / Institution Division of Orthodontics, Department of Dentistry, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation
Classification case report
  • ABSTRACT
  • TITLE

Introduction
This case report describes a patient who received non-extraction orthodontic treatment to obtain balanced occlusion.

Diagnosis
A 21-year-old male with chief complaint of bimaxillary crowding visited our hospital for help. Clinical examination revealed bilateral molar Class III relationship, and narrow lower dentition. The lateral cephalometric analysis showed skeletal Class III relationship. The panoramic radiograph showed tooth 47 caries and no impaction.

Treatment Overview
We used self-ligating brackets to align teeth and expand arch. Through the 15-months active treatment without tooth extraction, crowding was relieved and Class I occlusion was achieved. After appliance removal, two removable clear retainers were placed in both arches.

Conclusion
Narrow arch expansion treatment involved not only expanding technique, but also delicate torque control. Orthodontist must have the total control of the mechanics used to achieved the best final results. After treatment, both occlusion and esthetic were approved, and patient was satisfied with the result.

Self-ligating Appliance for Class III Malocclusion in Patient with Narrow Mandibular Arch