Sequential traction of a labio-palatal horizontally impacted maxillary canine with a custom threedirectional force device in the space of a missing ipsilateral first premolar
Yang Shuliang, Jin Anting, Ha Nayong, Dai Qinggang, Zhou Siru, Yang Yiling, Gong Xinyi, Hong Yueyang, Ding Qinfeng, Jiang Lingyong,
소속 상세정보
( Yang Shuliang ) - Shanghai Jiaotong University School of Medicine Ninth People′s Department of Oral and Craniomaxillofacial Surgery
( Jin Anting ) - Shanghai Jiaotong University School of Medicine Ninth People′s Department of Oral and Craniomaxillofacial Surgery
( Ha Nayong ) - Shanghai Jiaotong University School of Medicine Ninth People′s Department of Oral and Craniomaxillofacial Surgery
( Dai Qinggang ) - Shanghai Jiaotong University Shanghai Ninth People’s Hospital The 2nd Dental Center
( Zhou Siru ) - Shanghai Jiaotong University School of Medicine Ninth People′s Department of Oral and Craniomaxillofacial Surgery
( Yang Yiling ) - Shanghai Jiaotong University School of Medicine Ninth People′s Department of Oral and Craniomaxillofacial Surgery
( Gong Xinyi ) - Shanghai Jiaotong University School of Medicine Ninth People′s Department of Oral and Craniomaxillofacial Surgery
( Hong Yueyang ) - Shanghai Jiaotong University School of Medicine Ninth People′s Department of Oral and Craniomaxillofacial Surgery
( Ding Qinfeng ) - Shanghai Jiaotong University School of Medicine Ninth People′s Department of Oral and Craniomaxillofacial Surgery
( Jiang Lingyong ) - Shanghai Jiaotong University School of Medicine Ninth People′s Department of Oral and Craniomaxillofacial Surgery
Abstract
Orthodontic treatment is more complicated when both soft and hard tissues must be considered because an impacted maxillary canine has important effects on function and esthetics. Compared with extraction of impacted maxillary canines, exposure followed by orthodontic traction can improve esthetics and better protect the patient's teeth and alveolar bone. Therefore, in order to achieve desirable tooth movement with minimal unexpected complications, a precise diagnosis is indispensable to establish an effective and efficient force system. In this report, we describe the case of a 31-year-old patient who had a labio-palatal horizontally impacted maxillary left canine with a severe occlusal alveolar bone defect and a missing maxillary left first premolar. Herein, with the aid of three-dimensional imaging, sequential traction was performed with a three-directional force device that finally achieved acceptable occlusion by bringing the horizontally impacted maxillary left canine into alignment. The maxillary left canine had normal gingival contours and was surrounded by a substantial amount of regenerated alveolar bone. The 1-year follow-up stability assessment demonstrated that the esthetic and functional outcomes were successful.
키워드
Sequential traction; Custom design; Three-directional force; Impaction
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