ID | 58099 |
フルテキストURL | |
著者 |
Sukegawa, Shintaro
Department of Oral Pathology and Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
ORCID
Kaken ID
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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
ORCID
Kaken ID
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Takabatake, Kiyofumi
Department of Oral Pathology and Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
Kaken ID
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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
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Furuki, Yoshihiko
Department of Oral and Maxillofacial Surgery, Kagawa Prefectural Central Hospital
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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.
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キーワード | mandibular condylar fracture
unsintered hydroxyapatite
poly-l-lactide composite plate
bioactive resorbable plate
biomechanical loading evaluation
fracture fixation
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発行日 | 2019-05-13
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出版物タイトル |
Materials
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巻 | 12巻
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号 | 9号
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出版者 | MDPI
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開始ページ | 1557
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ISSN | 1996-1944
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資料タイプ |
学術雑誌論文
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言語 |
英語
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OAI-PMH Set |
岡山大学
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著作権者 | © 2019 by the authors.
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論文のバージョン | publisher
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PubMed ID | |
DOI | |
Web of Science KeyUT | |
関連URL | isVersionOf https://doi.org/10.3390/ma12091557
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ライセンス | http://creativecommons.org/licenses/by/4.0/
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助成機関名 |
日本学術振興会
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助成番号 | 20837661
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