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ID 58099
フルテキストURL
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著者
Sukegawa, Shintaro Department of Oral Pathology and Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences ORCID Kaken ID publons
Kanno, Takahiro Department of Oral and Maxillofacial Surgery, Shimane University Faculty of Medicine
Yamamoto, Norio Department of Orthopaedic Surgery, Kagawa Prefectural Central Hospital
Nakano, Keisuke Department of Oral Pathology and Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Kaken ID researchmap
Takabatake, Kiyofumi Department of Oral Pathology and Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Kaken ID researchmap
Kawai, Hotaka Department of Oral Pathology and Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
Nagatsuka, Hitoshi Department of Oral Pathology and Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Kaken ID researchmap
Furuki, Yoshihiko Department of Oral and Maxillofacial Surgery, Kagawa Prefectural Central Hospital
抄録
Osteosynthesis absorbable materials made of uncalcined and unsintered hydroxyapatite (u-HA) particles, poly-l-lactide (PLLA), and u-HA/PLLA are bioresorbable, and these plate systems have feasible bioactive osteoconductive capacities. However, their strength and stability for fixation in mandibular subcondylar fractures remain unclear. This in vitro study aimed to assess the biomechanical strength of u-HA/PLLA bioresorbable plate systems after internal fixation of mandibular subcondylar fractures. Tensile and shear strength were measured for each u-HA/PLLA and titanium plate system. To evaluate biomechanical behavior, 20 hemimandible replicas were divided into 10 groups, each comprising a titanium plate and a bioresorbable plate. A linear load was applied anteroposteriorly and lateromedially to each group to simulate the muscular forces in mandibular condylar fractures. All samples were analyzed for each displacement load and the displacement obtained by the maximum load. Tensile and shear strength of the u-HA/PLLA plate were each approximately 45% of those of the titanium plates. Mechanical resistance was worst in the u-HA/PLLA plate initially loaded anteroposteriorly. Titanium plates showed the best mechanical resistance during lateromedial loading. Notably, both plates showed similar resistance when a lateromedially load was applied. In the biomechanical evaluation of mandibular condylar fracture treatment, the u-HA/PLLA plates had sufficiently high resistance in the two-plate fixation method.
キーワード
mandibular condylar fracture
unsintered hydroxyapatite
poly-l-lactide composite plate
bioactive resorbable plate
biomechanical loading evaluation
fracture fixation
発行日
2019-05-13
出版物タイトル
Materials
12巻
9号
出版者
MDPI
開始ページ
1557
ISSN
1996-1944
資料タイプ
学術雑誌論文
言語
English
OAI-PMH Set
岡山大学
著作権者
© 2019 by the authors.
論文のバージョン
publisher
PubMed ID
DOI
Web of Science KeyUT
関連URL
isVersionOf https://doi.org/10.3390/ma12091557
ライセンス
http://creativecommons.org/licenses/by/4.0/
助成機関名
日本学術振興会
助成番号
20837661