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学科主题: 口腔医学
题名:
Finite element analysis of stress distribution of obturator prostheses for acquired unilateral maxillary defects
作者: Feng, YZ; Feng, HL; Wu, HJ
关键词: maxillary defect ; obturator prosthesis ; 3-dimention finite element ; stress
刊名: JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY
发表日期: 2005-10-01
卷: suppl.1, 页:365-368
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Metallurgy & Metallurgical Engineering
研究领域[WOS]: Metallurgy & Metallurgical Engineering
关键词[WOS]: QUALITY-OF-LIFE ; MIDFACE RECONSTRUCTION ; FRAMEWORK DESIGN ; FREE-FLAP ; MAXILLECTOMY ; RESECTION
英文摘要:

Objective To assess stresses produced by different obturator prostheses. Methods Three-dimensional finite element models of unilateral maxillary defects rehabilitated with different obturators were constructed. The different stresses were analyzed by three-dimensional finite element method under different load angle. Results The Von Mises stress values obtained for the remaining tissues adjacent to defect cavity were higher when rehabilitated by inferior hollow obturator in comparison with by superior hollow obturator. The maximum of Von Mises were higher when rehabilitated by resilient hollow obturator than by rigid hollow obturator. It was also observed that in the rigid type stress distribution contours formed in the remaining tissues adjacent to defect cavity, while in resilient hollow obturator prostheses the stress distributed mainly in the prosthesis itself. The oblique load shows the most maximum of Von Mises among all types of obturator prostheses. Conclusions A high lateral wall of an obturator may be more better in preserving the remaining structures than a shorter prosthesis lateral wall. A soft liner may be incorporated to reduce the pain of the residual maxillary structures and mucosa. When load on defect, higher stress would be generated to the residual maxillary structures. The adjustment of occlusual relationship is very important.

语种: 英语
WOS记录号: WOS:000234422700073
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/66766
Appears in Collections:北京大学口腔医学院_口腔修复科_期刊论文

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作者单位: 1.Cent S Univ, Xiangya Hosp 2, Dept Stomatol, Changsha 410011, Peoples R China
2.Peking Univ, Sch Stomatol, Dept Prosthodont, Beijing 100081, Peoples R China

Recommended Citation:
Feng, YZ,Feng, HL,Wu, HJ. Finite element analysis of stress distribution of obturator prostheses for acquired unilateral maxillary defects[J]. JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY,2005,suppl.1:365-368.
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