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Stress change on the temporomandibular joint in mandibular prognathism subjects with asymmetry after orthognathic surgery
http://hdl.handle.net/2297/25426
http://hdl.handle.net/2297/254264cac7435-132d-4d64-bcb4-fd7f6c0521be
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
ME-PR-UEKI-K-522.pdf (479.2 kB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2017-10-03 | |||||
| タイトル | ||||||
| タイトル | Stress change on the temporomandibular joint in mandibular prognathism subjects with asymmetry after orthognathic 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× Marukawa, Kohei× Yamamoto, Etsuhide× Takeuchi, Norio |
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| 提供者所属 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 金沢大学医薬保健研究域医学系 | |||||
| 書誌情報 |
European Journal of Orthodontics 巻 32, 号 5, p. 522-529, 発行日 2010-10-01 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0141-5387 | |||||
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| 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/cjp143 | |||||
| 出版者 | ||||||
| 出版者 | Oxford University Press (OUP) | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The purpose of this study was to evaluate changes in stress on the temporomandibular joint (TMJ) in 80 Japanese subjects (21 males and 59 females, mean age 23.7 years) with mandibular prognathism, with and without asymmetry after orthognathic surgery using the rigid bodies spring model (RBSM). The asymmetric group consisted of 40 subjects whose Mx-Md midline was more than 3 degrees. The remaining 40 subjects formed the symmetric group.The geometry of the stress analysis model was based on frontal cephalograms of the subjects. Menton (Me), the centre point of occlusal force on a line connecting the bilateral buccal cusps of the second molars, and the most lateral, superior, and medial points on the condyle were plotted on a computer display and stress on the condyle was calculated with the two-dimensional RBSM program, Fortran. The degree (force partition) of the resultant force, the direction (angulation), and the displacement (X, Y) of each condyle were calculated and the horizontal displacement (u), the vertical displacement (v), and rotation displacement (θ) of the mandibular body at Me were calculated pre- and post-operatively. The data was analysed using paired and unpaired t-tests.For the vertical (v) and rotational (θ) displacement, the post-operative value was smaller than the pre-operative value (v: P < 0.001, θ: P = 0.0063) in the asymmetric group. For angulation and the X-component, the post-operative value was smaller than that pre-operatively on the deviated (angulation: P = 0.0074, X-component: P = 0.0003) and non-deviated (angulation: P = 0.0024, X-component: P = 0.001) side in the asymmetric group. However, there was no significant difference between the pre- and post-operative value for any parameter in the symmetric group.These findings suggest that surgical correction of mandibular prognathism, with and without asymmetry, could induce an improvement in stress balance on the TMJ in the frontal aspect. © The Author 2010. | |||||
| 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 | |||||
