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ID 106077
Title Transcription
シカ キョウセイヨウ アンカー スクリュー マイニュウジ ノ アンテイセイ ニ カンスル セイタイリキガクテキ ケンキュウ
Title Alternative
Stress analysis on surrounding bone of anchor screw during orthodontic force application
Author
Inoue, Masahide The University of Tokushima
Kuroda, Shingo The University of Tokushima KAKEN Search Researchers
Keywords
アンカースクリュー
有限要素解析
傾斜埋入
Content Type
Thesis or Dissertation
Description
Objective: The purpose of this study was to evaluate the influence of placement angle and force direction on the primary stability of orthodontic miniscrews by analyzing a novel three-dimensional finite element model (FEM) approximating the real interface between the screw and surrounding bone.
Materials and Methods: Three-dimensional finite element models were made with 6-mm-long miniscrews in diameters of 1.2mm. Four insertion angles ranging from 0° (perpendicular to the bone surface) to 45° were examined. A load with 2N was applied to the center of the screw head in four directions (upward, downward and on the right and left sides).
Results: For miniscrews at the same insertion angle, the stress was the highest (or lowest) under the downward (or upward) force condition. The stress increased as the insertion angle decreased, except under the upward force condition. An analysis of the stress distribution in the surrounding bone showed that the most of the stress was absorbed in the cortical bone.
Conclusions: The stress distribution around the miniscrew and surrounding bone during the application of orthodontic force is closely related to the force direction, and insertion angle.
Journal Title
四国歯学会雑誌
ISSN
09146091
NCID
AN10050046
Publisher
四国歯学会
Volume
27
Issue
1
Start Page
27
End Page
34
Published Date
2014-06-30
Remark
内容要旨・審査要旨・論文本文の公開
内容要旨 : LID201404231004.pdf
審査要旨 : LID201404231005.pdf
論文本文 : LID201404231006.pdf
本論文は, 著者井上雅秀の学位論文として提出され, 学位審査・授与の対象となっている。
FullText File
language
jpn
TextVersion
ETD
MEXT report number
甲第2690号
Diploma Number
甲口第374号
Granted Date
2014-03-13
Degree Name
Doctor of Dental Science
Grantor
Tokushima University
departments
Oral Sciences