The effect of stress distribution and displacement by two kinds of different distract directions on mandibular body / 华西口腔医学杂志
West China Journal of Stomatology
;
(6): 217-219, 2009.
Article
in Chinese
| WPRIM
| ID: wpr-248268
ABSTRACT
<p><b>OBJECTIVE</b>To establish a three-dimensional finite element model of mandibular distraction osteogenesis (DO) in order to study the influence of distraction orientations to mandibular DO.</p><p><b>METHODS</b>By using the two finite element models, Von Mises stress and the displacement under different loads were measured.</p><p><b>RESULTS</b>The maximum stress in the distract equipment paralleled to the mandibular corpus was two times of that when the distract equipment paralleled to the sagittal axis. Von Mises stress concentration mainly occurred in the loading position and the condylar ante inferior. This phenomenon may lead to partial bone resorption, consequently lead to screw loose and affect the stability of distraction device. When the displacement increased in the model, the maximum stress and displacement showed linear relation.</p><p><b>CONCLUSION</b>The counterforce produced by the device makes lateral displacement in tail. The reaction force could be reduced to a minimum degree when the traction device parallel to the sagittal axis. This study provides theoretical basis for the position of distract equipment and distraction orientations in clinical application.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Biomechanical Phenomena
/
Osteogenesis, Distraction
/
Finite Element Analysis
/
Mandible
Limits:
Humans
Language:
Chinese
Journal:
West China Journal of Stomatology
Year:
2009
Type:
Article
Similar
MEDLINE
...
LILACS
LIS