Comparison of biomechanical behaviour of maxilla following Le Fort I osteotomy with 2-versus 4-plate fixation using 3D-FEA. Part 1: Advancement surgery
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Date
2008
Authors
Atac, M. S.
Erkmen, E.
Yucel, E.
Kurt, A.
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Volume Title
Publisher
Churchill Livingstone
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Abstract
The study aimed to calculate the location and intensity of the maximum stress fields on the fixation plates and surrounding maxilla following Le Fort I osteotomies after advancement procedures using three-dimensional finite element analysis. The models were generated using skull CT scan data. Le Fort I osteotomy Simulations were made and two separate impacted maxillary models were designed. The ADV-2 model has 2 plate fixations bilaterally at the piriform rims, the ADV-4 model has 4 plate fixations at the zygomatic buttresses and piriform rims. The stress fields on bone, plate and screws were computed for each model. Posterior occlusal loads were simulated on one side in the molar-premolar region, in all three directions, reflecting the chewing forces. The increased locations of highest Von Mises stresses on the plates and highest maximum principle stresses on the bones were determined in ADV-2 models especially Under horizontal and oblique loads when compared with ADV-4 models. Evaluation of the highest Von Mises Stress Values and maximum principal stress revealed that oblique load in the ADV-2 model received the highest values. 4-plate fixation following Le Fort I advancement Surgery exerts less stress on the maxillary bones and fixation materials than 2-plate fixation.
Description
ERKMEN, Erkan/0000-0002-4746-5281
ORCID
Keywords
3D finite element analysis, Le Fort I osteotomy, advancement surgery, internal fixation
Turkish CoHE Thesis Center URL
Fields of Science
Citation
30
WoS Q
Q2
Scopus Q
Source
Volume
37
Issue
12
Start Page
1117
End Page
1124