ID 109851
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 Department of Orthodontics and Dentofacial Orthopedics, The University of Tokushima Graduate School of Oral Sciences
Kuroda, Shingo Department of Orthodontics and Dentofacial Orthopedics, Institute of Health Biosciences, The University of Tokushima Graduate School
Tanaka, Eiji Department of Orthodontics and Dentofacial Orthopedics, Institute of Health Biosciences, The University of Tokushima Graduate School Tokushima University Educator and Researcher Directory 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
Journal Article
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 threedimensional finite element model (FEM) approximating the 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 1.2 mm. Four insertion angles ranging from 0̊ (perpendicular to the bone surface) to 45̊ were examined. A load with 2 N 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 increased, 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
Sort Key
27
Published Date
2014-06-30
EDB ID
FullText File
language
jpn
TextVersion
Publisher
departments
Oral Sciences