A 3-year Survey on Jaw Deformity Treatment of Kyushu Region in Fukuoka Jaw Deformity Study Group

The aims of this study were to investigate the current treatment of jaw deformity in the Kyushu region in Japan and to consider the differences among surgical facilities and the discussion topics for treating jaw deformity in the region. A questionnaire survey of jaw deformity treatment between April 2014 and March 2017 was carried out and 19 surgical facilities were enrolled 1)福岡医療短期大学歯科衛生学科(主任:泉 喜和子教授) 2)福岡歯科大学口腔・顎顔面外科学講座(主任:池邊哲郎教授) 3)九州中央病院歯科口腔外科(主任:堀之内康文部長) 4)久留米大学歯科口腔医療センター(主任:楠川仁悟教授) 5)中央歯科・口腔外科クリニック(主任:下田恒久院長) 6)大分岡病院マキシロフェイシャルユニット(主任:松本有史部長) 7)九州歯科大学口腔内科学分野(主任:吉岡 泉教授) 8)福岡大学医学部歯科口腔外科学講座(主任:近藤誠二教授) 9)長崎大学顎口腔再生外科学分野(主任:朝比奈 泉教授) 10)宮崎県立宮崎病院歯科口腔外科(主任:伊藤雅樹科長) 11)鹿児島大学大学院医歯学総合研究科顎顔面機能再建学講座口腔顎顔面外科学分野(主任:中村典史教授) 12)新百合ヶ丘総合病院歯科口腔外科(主任:喜久田利弘部長) 1)Department of Dental Hygiene, Fukuoka College of Health Sciences(Chief : Prof. Kiwako IZUMI) 2)Department of Oral and Maxillofacial Surgery, Fukuoka Dental College(Chief : Prof. Tetsuro IKEBE) 3) Department of Oral and Maxillofacial Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers (Chief : Dr. Yasufumi HORINOUCHI) 4)Dental and Oral Medical Center, Kurume University School of Medicine(Chief : Prof. Jingo KUSUKAWA) 5)Dent-oral and Maxillofacial Surgery Clinic(Chief : Dr. Tsunehisa SHIMODA) 6)Maxillofacial Unit, Oita Oka Hospital(Chief : Dr. Yushi MATSUMOTO) 7)Division of Oral medicine, Kyushu Dental University (Chief : Prof. Izumi YOSHIOKA) 8)Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Fukuoka University(Chief : Prof. Seiji KONDO) 9)Department of Regenerative Oral Surgery, Nagasaki University (Chief : Prof. Izumi ASAHINA) 10)Miyazaki Prefectural Miyazaki Hospital(Chief : Dr. Masaki ITO) 11) Department of Oral and Maxillofacial Surgery, Field of oral and maxillofacial Rehabilitation, Kagoshima University Graduate School of Medical and Dental Sciences(Chief : Prof. Norifumi NAKAMURA) 12)Department of Oral and Maxillofacial Surgery, Shinyurigaoka General Hospital(Chief : Dr. Toshihiro KIKUTA) 162 日顎変形誌 2021 年 泉 喜和子,他 in the survey. The survey consisted of questions that referred to a nationwide survey performed by the Japanese Society for Jaw Deformities. As a result, the number of patients who received orthognathic surgery was 1,579, about 68% of whom were diagnosed with mandibular protrusion. Sagittal split ramus osteotomy (SSRO) was performed in 1,388 patients (87.9%) and Le Fort I osteotomy (LF1) in 536 patients (33.9%). The average operation time was 163 minutes and the amount of bleeding was 172g in SSSO, and those in two-jaw surgery were 300 minutes and 434g respectively. There was a significant correlation between operation time and blood loss in two-jaw surgery (r=0.74, p<0.01). Autologous blood transfusion was performed in two-jaw surgery patients by all facilities. The average duration of hospital stay was 15 days but varied by more than twenty days depending on the facility. Regarding food type after discharge, 12 facilities (70%) required patients to take chopped or soft food. All complications in this questionnaire survey were experienced. Orthodontic appliance detachment was the complication that occurred most frequently and was experienced by 12 facilities, but just 5 facilities described this in the informed consent. This survey revealed the current status of jaw deformity treatment in the Kyushu region. We considered the values of bleeding loss and operation time in LF1 were high and that it is necessary to re-examine the procedure of LF1. The topics requiring discussion in the future are nutritional intake management and to add orthodontic appliance detachment as a complication to the informed consent.