A Case Report of Two-stage Surgical Management for Severe Mandibular Prognathism

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  • MINAMIZATO TOKUTARO
    Department of Regenerative Oral Surgery, Unit of Translational Medicine, Nagasaki University Graduate School of Biomedical Sciences
  • KOHARA HARUKA
    Departments of Orthodontics and Dentofacial Orthopedics, Nagasaki University Graduate School of Biomedical Sciences
  • OHBA SEIGO
    Department of Regenerative Oral Surgery, Unit of Translational Medicine, Nagasaki University Graduate School of Biomedical Sciences
  • KAKEHASHI HIROE
    Department of Regenerative Oral Surgery, Unit of Translational Medicine, Nagasaki University Graduate School of Biomedical Sciences
  • YOSHIDA NORIAKI
    Departments of Orthodontics and Dentofacial Orthopedics, Nagasaki University Graduate School of Biomedical Sciences
  • ASAHINA IZUMI
    Department of Regenerative Oral Surgery, Unit of Translational Medicine, Nagasaki University Graduate School of Biomedical Sciences

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  • 重度の骨格性下顎前突症患者に対して二段階の顎矯正手術を施行した1例

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Abstract

In cases of jaw deformity, bimaxillary surgery combining Le Fort I osteotomy and sagittal split ramus osteotomy (SSRO) is one of the standard operations. However, this operation can be difficult to use in cases of severe mandibular prognathism because of the large amount of setback. We report herein a case of severe mandibular prognathism treated with a two-stage surgical procedure. At the first stage, we performed mandibular body ostectomy, followed at the second stage by maxillary advancement by Le Fort I osteotomy and mandibular set-back by sagittal split ramus osteotomy. This unique two-stage surgical treatment improved and kept the patient's overall facial aesthetics and occlusion for one year postoperatively.

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