新規骨固定補助装置は顎整形治療を想定した即時高荷重条件下でも歯科矯正用アンカースクリューの安定性を向上させる

• Material Type: 博士論文
• Title: 新規骨固定補助装置は顎整形治療を想定した即時高荷重条件下でも歯科矯正用アンカースクリューの安定性を向上させる
• Author/Editor: 山形, 勁太
• Author Heading: 山形, 勁太 ヤマガタ, ケイタ
• Publication, Distribution, etc.: The E. H. Angle Education and Research Foundation
• Alternative Title: A novel auxiliary device enhances the miniscrew stability under immediate heavy loading simulating orthopedic treatment
• Degree grantor/type: 鹿児島大学
• Date Granted: 2022-10-18
• Dissertation Number: 甲総研第672号
• Degree Type: 博士(歯学); Doctor of Philosophy in Dental Science
• Text Language Code: eng
• Subject Heading: Miniscrew; Stability; Animal study; Temporary anchorage device; Orthopedic force; Immediate loading
• Target Audience: 一般
• Note (General): 博士論文全文, 博士論文要旨, 最終試験結果の要旨, 論文審査の要旨; Objectives: To evaluate miniscrew stability and perform a histomorphometric analysis of the bone around the miniscrew under a load corresponding to orthopedic force. Materials and Methods: Thirty-two miniscrews were implanted into eight rabbit tibias. Auxiliary group rabbits received auxiliary devices with miniscrews (n = 8, 28 days; n = 8, 56 days), and those in the nonauxiliary control group received miniscrews without auxiliary devices (n = 8, 28 days; n = 8, 56 days). Elastics were placed between miniscrews to apply a load of 5 N. Miniscrew stability was evaluated using a Periotest. Bone-to-implant contact (BIC) and spike implantation depth were measured histomorphologically. Results: Periotest values in the auxiliary group were significantly lower than those in the nonauxiliary group at all time periods. There was no significant difference in BIC between the auxiliary and nonauxiliary groups at 28 or 56 days postimplantation. The implantation spike depth in the auxiliary group was significantly greater at 56 days compared to that at 28 days. Newly formed bone was observed around the spike of the auxiliary device at 56 days. Conclusions: The results suggest that the use of miniscrews in conjunction with auxiliary devices provides stable skeletal anchorage, which may be useful in orthopedic treatments. Keita Yamagata, Yasuhiko Oga, Sangho Kwon, Aya Maeda-Iino, Takanori Ishikawa, Shouichi Miyawaki A novel auxiliary device enhances the miniscrew stability under immediate heavy loading simulating orthopedic treatment Angle Orthodontist (2022) https://doi.org/10.2319/022222-163.1
• Format (IMT): application/pdf
• Access Restrictions: インターネット公開
• Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）; https://irdb.nii.ac.jp
• Original Data Provider (Database): 鹿児島大学 : 鹿児島大学リポジトリ

Table of Contents

Result_YAMAGATA_Keita_isk_672 other

Comments_YAMAGATA_Keita_isk_672 other

Diss_山形_勁太_ISK672_2022 fulltext

Abstract_山形_勁太_4518800103_2022 abstract