The korean journal of orthodontics (대한치과교정학회지)

The Korean Association Of Orthodontists (대한치과교정학회)
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Sequential traction of a labio-palatal horizontally impacted maxillary canine with a custom three-directional force device in the space of a missing ipsilateral first premolar

  • Yang, Shuliang (Center of Craniofacial Orthodontics, Department of Oral and Craniomaxillofacial Surgery, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology) ;
  • Yang, Xiao (Center of Craniofacial Orthodontics, Department of Oral and Craniomaxillofacial Surgery, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology) ;
  • Jin, Anting (Center of Craniofacial Orthodontics, Department of Oral and Craniomaxillofacial Surgery, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology) ;
  • Ha, Nayong (Center of Craniofacial Orthodontics, Department of Oral and Craniomaxillofacial Surgery, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology) ;
  • Dai, Qinggang (The 2nd Dental Center, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research center of Stomatology) ;
  • Zhou, Siru (Center of Craniofacial Orthodontics, Department of Oral and Craniomaxillofacial Surgery, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology) ;
  • Yang, Yiling (Center of Craniofacial Orthodontics, Department of Oral and Craniomaxillofacial Surgery, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology) ;
  • Gong, Xinyi (Center of Craniofacial Orthodontics, Department of Oral and Craniomaxillofacial Surgery, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology) ;
  • Hong, Yueyang (Center of Craniofacial Orthodontics, Department of Oral and Craniomaxillofacial Surgery, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology) ;
  • Ding, Qinfeng (Center of Craniofacial Orthodontics, Department of Oral and Craniomaxillofacial Surgery, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology) ;
  • Jiang, Lingyong (Center of Craniofacial Orthodontics, Department of Oral and Craniomaxillofacial Surgery, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology)
  • Received : 2018.08.22
  • Accepted : 2018.11.27
  • Published : 2019.03.25
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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.

Keywords

References

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