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学科主题: 口腔医学
题名:
In vivo mandibular elastic deformation during clenching on pivots
作者: Jiang, T; Ai, M
关键词: mandible ; deformation ; distortion ; clenching ; human
刊名: JOURNAL OF ORAL REHABILITATION
发表日期: 2002-02-01
卷: 29, 期:2, 页:201-208
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Dentistry, Oral Surgery & Medicine
研究领域[WOS]: Dentistry, Oral Surgery & Medicine
英文摘要:

Lower rigidly connected long span bridges supported by natural abutments or implants sometimes become loose, come off, or fracture after a period of usage. Many reasons have been discussed for these failures. However, few researchers have shown the influence of mandibular elastic deformation on the abutments, although this influence is likely to produce a distortion force between the abutment and prosthesis. Therefore, this study measured the elastic deformation of the human mandibular arch during clenching on pivots by using charge-coupled device (CCD) cameras and an image analysing system. When the subjects clenched on the canines (unilaterally or bilaterally) or bilateral second molars, no mandibular deformation was found; whereas when the subjects clenched on the unilateral second molars, the mandibular arch on the non-pivot side moved upward and inward and the straight line distances between the right and left measurement points decreased by 0.2 mm. The magnitude of deformation is smaller than the depressible limit of periodontal membrane. This suggests that the influence of mandibular deformation on the connected prosthesis is negligible in the case of the natural root supported long span bridge but should probably be considered in the case of the implant supported bridge.

语种: 英语
WOS记录号: WOS:000174572700014
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/60184
Appears in Collections:北京大学口腔医学院_期刊论文

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作者单位: 1.Peking Univ, Sch Stomatol, Dept Prosthet Dent, Beijing 100081, Peoples R China
2.Tokyo Med & Dent Univ, Tokyo, Japan

Recommended Citation:
Jiang, T,Ai, M. In vivo mandibular elastic deformation during clenching on pivots[J]. JOURNAL OF ORAL REHABILITATION,2002,29(2):201-208.
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