【博士論文】学術データベース

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

書誌事項

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

タイトル別名

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

著者名

近藤崇伸

学位授与大学

Nagasaki University (長崎大学) (大学ID:0073) (CAT機関ID:KI000877)

取得学位

博士(歯学)

学位授与番号

甲医歯薬第951号

学位授与年月日

2017-03-21

注記・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.

開始ページ : 563

終了ページ : 569

元資料の権利情報 : © 2017 by The EH Angle Education and Research Foundation, Inc.

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.

キーワード

Alveolar bone resorption, Type of tooth movement, Center of resistance

各種コード

NII論文ID(NAID)

500001039662

NII著者ID(NRID)
  • 8000001148107
DOI (出版社)

10.2319/110416-794.1

DOI

info:doi/10.2319/110416-794.1

本文言語コード

eng

データ提供元

機関リポジトリ / NDLデジタルコレクション

外部リンク

DOI

博士論文 / 長崎大学 / 歯学

博士論文 / 長崎大学

博士論文 / 歯学

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