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Types of tooth movement, bodily or tipping, do not affect the displacement of its center of resistance, but affect the alveolar bone resorption


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タイトル: Types of tooth movement, bodily or tipping, do not affect the displacement of its center of resistance, but affect the alveolar bone resorption
その他のタイトル: 歯の移動様式(歯体移動と傾斜移動)は抵抗中心の移動量に影響を与えないが、歯槽骨吸収量に影響する
著者: 近藤, 崇伸
著者(別表記) : Kondo, Takanobu
発行日: 2017年 3月21日
出版者: EH Angle Education and Research Foundation, Inc.
引用: Nagasaki University (長崎大学), 博士(歯学) (2017-03-21)
抄録: Objective: To investigate how types of tooth movement, bodily or tipping, influence the displacement of the center of resistance in teeth and alveolar bone resorption. Materials and Methods: Ten-week-old female Wistar rats were divided into eight groups of different factors, as follows: type of movement (bodily and tipping) and force magnitude (10, 25, 50, and 100 cN). The maxillary left first molars were moved mesially with nickel-titanium coil springs for 28 days. Micro–computed tomography (micro-CT) images were taken before and after tooth movement. The position of the center of resistance was determined by using finite element models constructed from the micro-CT image. The displacement of the center of resistance and the volume of alveolar bone resorption were measured. Results: The displacement of the center of resistance showed no significant difference between the bodily and tipping groups. The displacements of the center of resistance were increased with force magnitude at 10 and 25 cN, whereas they were not further increased at 50 and 100 cN. On the other hand, cervical alveolar bone resorption was significantly greater in the tipping group than in the bodily group. Conclusions: Displacement of the center of resistance was not influenced by the types of tooth movement. However, volume of cervical alveolar bone resorption was greater in the tipping movement group than in the bodily movement group.
記述: 長崎大学学位論文 学位記番号:博(医歯薬)甲第951号 学位授与年月日:平成29年3月21日 / Author: Takanobu Kondo, Hitoshi Hotokezaka, Ryo Hamanaka, Megumi Hashimoto, Takako Nakano-Tajima, Kotaro Arita, Takeshi Kurohama, Airi Ino, Jun-ya Tominaga, Noriaki Yoshida / Citation: Angle Orthodontist, 87(4), pp.563-569; 2017 / 出版時論題変更
キーワード: Type of tooth movement / Center of resistance / Alveolar bone resorption
URI: http://hdl.handle.net/10069/37831
ISSN: 00033219
DOI: 10.2319/110416-794.1
関連リンク : http://hdl.handle.net/10069/37409
権利: © 2017 by The EH Angle Education and Research Foundation, Inc.
資料タイプ: Thesis or Dissertation
原稿種類: ETD
出現コレクション:110 学位論文

引用URI : http://hdl.handle.net/10069/37831

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