| Item type |
学位論文 / Thesis or Dissertation(1) |
| 公開日 |
2016-08-01 |
| 本文言語 |
|
|
言語 |
eng |
| タイトル |
|
|
タイトル |
Effect of tractive force using a temporary screw type anchorage device in alveolar bone －Stress analysis using the three-dimensional finite element method－ |
| 著者 |
中島, 章宏
Nakajima, Akihiro
|
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Temporary anchorage device |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Three-dimensional finite element method |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Maxilla |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_db06 |
|
資源タイプ |
doctoral thesis |
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
We used the three-dimensional finite element method to construct a three-dimensional model of the maxilla to evaluate the utility of the temporary anchorage device (TAD), and to investigate stress changes affecting the alveolar bone after the extraction of the first premolar. An outline of the model was fabricated from CT image data with the contours following extraction using the stress analysis software Mechanical Finder version 6.2 (Research Center of Computational Mechanics, Tokyo, Japan), followed by the construction of a three- dimensional maxillary model and fabrication of an extracted maxillary first premolar model. Four chronological models, immediately after tooth extraction, and after 1, 3, and 6 months, were fabricated by changing the CT values of the extracted area based on this model. A TAD was constructed in the mesial area of the upper first molar using SolidWorks software (Solid-Works, Tokyo, Japan). The upper first molar was constrained, and the upper canine was pulled in a distal direction towards the TAD at 1 N to analyze stress changes affecting the alveolar bone in the region of the extracted tooth. Stress affecting the alveolar bone in the extracted region peaked immediately after tooth extraction, and gradually decreased with time. On the other hand, stress concentration was observed in the mesial alveolar crest of the extraction socket and the stress increased with ossification of the extraction socket. These results suggest that when using TAD it is more beneficial to apply tractive force soon after tooth extraction for distal tooth movement. |
| 学位名 |
|
|
学位名 |
博士（歯学） |
| 学位授与機関 |
|
|
|
学位授与機関識別子Scheme |
kakenhi |
|
|
学位授与機関識別子 |
34408 |
|
|
学位授与機関名 |
大阪歯科大学 |
| 学位授与年月日 |
|
|
学位授与年月日 |
2015-03-06 |
| 学位授与番号 |
|
|
学位授与番号 |
甲第767号 |
学位論文 (729.2 kB)
