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The change of stress distribution on the condyle after mandibular setback surgery
http://hdl.handle.net/2297/7539
http://hdl.handle.net/2297/75394f979554-969a-4216-8430-e980d25de011
名前 / ファイル | ライセンス | アクション |
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HO-PR-UEKI-K-433.pdf (733.8 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2017-10-05 | |||||
タイトル | ||||||
タイトル | The change of stress distribution on the condyle after mandibular setback surgery | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Ueki, Koichiro
× Ueki, Koichiro× Nakagawa, Kiyomasa× Takatsuka, Shigeyuki× Yamamoto, Etsuhide |
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提供者所属 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 金沢大学医学部附属病院歯科口腔外科 | |||||
書誌情報 |
European Journal of Orthodontics 巻 28, 号 5, p. 433-439, 発行日 2006-10-01 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0141-5387 | |||||
NCID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00181330 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1093/ejo/cjl003 | |||||
出版者 | ||||||
出版者 | Oxford University Press | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The rigid-body spring model (RBSM) theory was incorporated into a model as a discrete method for analysing problems of limit, such as the stress distribution on the condyle. The purpose of this study was to evaluate the two-dimensional RBSM for determining stress on the temporomandibular joint (TMJ) in patients after orthognathic surgery. Thirty-two patients (five males and 27 females, mean age 21.4 ± 4.9 years) with mandibular prognathism underwent bilateral sagittal split ramus osteotomy (SSRO) and setback; 48 subjects were recruited as controls. Anatomical landmarks were traced from pre- and post-operative lateral cephalograms and the information was processed using the Fortran analysis program. The force vector on the condyle, its degree, its direction, and the displacement co-ordinates (x, y) and rotation (θ) at the gonial angle were calculated. When muscular power was assumed to be 1, the post-operative degree of the force vector was higher than the pre-operative value (P < 0.05). The X co-ordinate, x, and rotation, q, of the displacement vector in the pre-operative patients with mandibular prognathism were significantly higher than those in the control subjects (P < 0.05). There were still significant differences between the displacement values post-operatively between the patients and controls (P < 0.05). The results suggest that the degree and direction of the force vector and the resulting displacement co-ordinates can be used as parameters in a surgical model. The RBSM may also be useful in evaluating the pre- and post-operative skeletal morphology of jaw deformities. © The Author 2006. Published by Oxford University Press on behalf of the European Orthodontic Society. All rights reserved. | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa |