Biomechanical analysis on the fixation of mandibular condyle with sagittal fracture by double plates in 3 ways
10.3969/j.issn.1001-3733.2015.04.015
- VernacularTitle:3种不同方式的双板法坚固内固定髁突矢状骨折生物力学分析
- Author:
Jie JING
;
Yuna HEI
;
Ling TIE
;
Jia LI
;
Jinhua TIAN
- Publication Type:Journal Article
- Keywords:
Sagittal fracture ofthe mandibular condyle(SFMC);
Rigid fixation;
Finite element analysis(FEA);
Biomechanics;
Stress
- From:
Journal of Practical Stomatology
2015;(4):520-525
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To analyze the biomechanical stress distribution on the sagittal fractured of the mandibular condyle(SFMC) fixed by double plates in 3 different ways.Methods:The fixation finite element models with double straight plates(SS),one straight and one L-form plates(SL),and double L-form plates(LL)were established.The biomechanical stresses on condyle were calculated with finite element analysis.Results:In the model of SS fixation the maximum equivalent stress (MES),maximum total displacement (MTD)and maximum total corner(MTC)of condylar stump were 525.475 MPa,0.902 2 mm and 0.260 1°;MES,MTD,and MTC on fractured free-end were 4.425 MPa,0.882 7 mm and 0.019 9°,respectively.In the model of SL fixation MES,MTD and MTC on condylar stump were 1 135 MPa,0.9367 mm and 0.126 1°;MES,MTD and MTC on fractured free-end were 2.656 MPa,0.887 1 mm and 0.016 9°,respectively.In the model of LL fixation MES,MTD and MTC on condylar stump were 2 208 MPa,0.923 8 mm and 0.172 2°;MES,MTD and MTC on fractured free-end were 14.66 8 MPa,0.876 6 mm and 0.018 1°,respectively.Conclusion:Double L plates fixation is a proper way for SFMC.
