Three-dimensional finite element analysis of rigid internal fixation of mandibu lar symphysis fracture
- VernacularTitle:下颌骨颏部骨折坚强内固定应力遮挡的三维有限元分析
- Author:
Wei WU
;
Genglin SUN
;
Penglin WANG
- Publication Type:Journal Article
- Keywords:
Mandible;
Chin;
Fracture;
Internal fracture fixation;
Finite-element;
Stress-shielding
- From:
Journal of Practical Stomatology
2001;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To study the stress distribution dur i ng clenching and rigid internal fixation(RIF)of mandibular symphysis fracture. Methods:ANSYS software was used to establish the models of mandi bular symphysis fracture and the fracture treatment treat with RIF.The stress di stribution of mandibular symphysis fracture under different conditions were then analysed during different period of bone healthing. The value of stress shieldi ng rate was used to represent the level of stress shielding effects.Resu lts:The stress shielding rate decreased with the progression of fracture healing.The stress shielding rate produced by double plates fixation was higher than that by single plate.Stress shielding rate in the mandible fixed with tita nium plate was lower than that with steel plate.Conclusion:Minip late rigid internal fixation system may produce stress shielding effects when it is used to treat mandibular symphysis fractures. Stress shielding effects are a ffected by the attribute, the shape and the position of the plate.
