A Survey of Treatment for Dentofacial Deformities in the Past 16 Years in Oral and Maxillofacial Surgery/Orthodontics, Yokohama City University Medical Center

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  • HONDA KOJI
    Department of Oral and Maxillofacial Surgery, Yokohama City University Graduate School of Medicine
  • OMURA SUSUMU
    Department of Oral and Maxillofacial Surgery/Orthodontics, Yokohama City University Medical Center
  • FUJITA KOICHI
    Department of Oral and Maxillofacial Surgery/Orthodontics, Yokohama City University Medical Center
  • SHIBUTANI NAOKI
    Department of Oral and Maxillofacial Surgery/Orthodontics, Yokohama City University Medical Center
  • YONEMITSU IKUO
    Department of Orthodontic Science, Tokyo Medical and Dental University Graduate School of Medical and Dental Sciences
  • SHIMAZAKI KAZUO
    Department of Orthodontic Science, Tokyo Medical and Dental University Graduate School of Medical and Dental Sciences
  • MURATA SHOGO
    Department of Oral and Maxillofacial Surgery/Orthodontics, Yokohama City University Medical Center
  • TAKASU HIKARU
    Department of Oral and Maxillofacial Surgery/Orthodontics, Yokohama City University Medical Center
  • YAMASHITA YOSUKE
    Department of Oral and Maxillofacial Surgery/Orthodontics, Yokohama City University Medical Center
  • IWAI TOSHINORI
    Department of Oral and Maxillofacial Surgery, Yokohama City University Graduate School of Medicine
  • ONO TAKASHI
    Department of Orthodontic Science, Tokyo Medical and Dental University Graduate School of Medical and Dental Sciences
  • TOHNAI IWAI
    Department of Oral and Maxillofacial Surgery, Yokohama City University Graduate School of Medicine

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  • 横浜市立大学附属市民総合医療センター歯科・口腔外科・矯正歯科における過去16年間の顎変形症治療に関する実態調査

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A survey of orthognathic surgery in the past 16 years from 2000 to 2015, in the Department of Oral and Maxillofacial Surgery/Orthodontics, Yokohama City University Medical Center, was performed. <br>The results were as follows:<br>1. In the past 16 years, 798 patients with dentofacial deformities underwent orthognathic surgery. In the last 5 years, the average number of patients was 72.8 per year.<br>2. There were 247 male and 551 female patients (ratio 1：2.2).<br>3. The mean age at surgery was 26.6 years old.<br>4. The most common clinical diagnosis was mandibular protrusion without other conditions, accounting for 38.7% of the patients. Mandibular protrusion with asymmetry and asymmetry without other conditions accounted for 16.8% and 12.0%, respectively.<br>5. The most common surgical procedure was the combination of Le Fort I osteotomy and sagittal split ramus osteotomy (SSRO), accounting for 59.3%. SSRO accounted for only 23.7%.

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