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アブストラクト（52巻1/2号：神奈川歯学）
Japanese
| Title ： | 骨格性下顎前突症患者における矯正単独治療と外科的矯正治療の経時的変化 |
|---|---|
| Subtitle ： | 原著 |
| Authors ： | 岡村祥吾, 小泉創, 河田俊嗣 |
| Authors（kana） ： | |
| Organization ： | 神奈川歯科大学口腔機能修復学講座歯科矯正学分野 |
| Journal ： | 神奈川歯学 |
| Volume ： | 52 |
| Number ： | 1/2 |
| Page ： | 1-6 |
| Year/Month ： | 2017 / 12 |
| Article ： | 原著 |
| Publisher ： | 神奈川歯科大学学会 |
| Abstract ： | 「緒言」 下顎前突症患者の歯科矯正治療には, 矯正歯科治療のみで行う場合(矯正単独治療)と, 上下顎間関係の改善を目的とした矯正手術を併用して行う場合(外科的矯正治療)とがある. 外科的矯正治療を選択した場合は, 術前に上下顎前歯歯軸を補正する. これは, 上下顎間関係の不調和に対する補償として上顎前歯唇側傾斜及び下顎前歯舌側傾斜を示すいわゆるデンタルコンペンセーションが認められるからである. デンタルコンペンセーションは上下顎間関係の不調和を擁護し, 口腔機能である咀嚼, 嚥下, 発音を助けるなど重要な役割を担っている. すなわち, 過度の歯軸傾斜は, 咬合によって, 歯肉・歯槽骨などに負担がかかる. 竹内らの報告では, 8020達成者に下顎前突症を呈する者は存在せず, 長期咬合の安定の観点からも骨格性の偏位を伴う下顎前突症の治療は前歯の被蓋関係の改善だけではなく骨格の改善も求められる. |
| Practice ： | 歯科学 |
| Keywords ： | 骨格性下顎前突, 前歯歯軸, デンタルコンペンセーション |
English
| Title ： | Change of skeletal and tooth inclination on orthodontic treatment with or without surgery in mandibular prognathism patients |
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| Subtitle ： | |
| Authors ： | Shougo OKAMURA, So KOIZUMI, Toshitugu KAWATA |
| Authors（kana） ： | |
| Organization ： | Division of Orthodontics, Department of Oral function and Restoration, Graduate School of Dentistry, Kanagawa Dental University |
| Journal ： | Kanagawa Shigaku |
| Volume ： | 52 |
| Number ： | 1/2 |
| Page ： | 1-6 |
| Year/Month ： | 2017 / 12 |
| Article ： | Original article |
| Publisher ： | Kanagawa Odontological Society |
| Abstract ： | [Abstract] The purpose of this study was to compare the change in skeletal and tooth inclination through orthodontic treatment with or without surgery in mandibular prognathism patients. 27 patients with mandibular prognathism who had been treated with orthodontic treatment at the University of Kanagawa Dental Hospital were used in this study. 13 patients were orthodontically treated with sagittal split ramus osteotomy jaw surgery and without premolar extraction (OPE group), while the other 14 patients were treated with neither surgery nor premolar extraction (non-OPE group). Lateral cephalograms were taken at the first medical examination, just after surgery and at the end of treatment, and evaluated for SNA, SNB, ANB and inclination of incisors (U1-SN, U1-NA, IMPA and L1-NB). A comparison between the OPE and non-OPE groups before treatment showed severe skeletal mandibular prognathism and dental compensation in the OPE group. On the other hand, no evaluation values were different after treatment between the OPE and non-OPE groups. Dental compensation increased in the non-OPE group after treatment compared with before treatment but no skeletal change was observed throughout the treatment. An amelioration change in skeletal and dental components was observed in the OPE group, but mandibular prognathism and dental compensation, especially of the upper incisor, remained. Furthermore, mandibular relapse and dental recompensation were observed throughout the period from just after surgery to the end of treatment. These results suggest the need to consider two-jaw surgery and premolar extraction for the treatment of severe mandibular prognathism. |
| Practice ： | Dentistry |
| Keywords ： |
