Atac, M. S.Erkmen, E.Yucel, E.Kurt, A.2024-07-052024-07-052009180901-502710.1016/j.ijom.2008.10.0052-s2.0-58149468407https://doi.org/10.1016/j.ijom.2008.10.005https://hdl.handle.net/20.500.14411/970ERKMEN, Erkan/0000-0002-4746-5281The aim of the second part of this Study was to evaluate the mechanical behaviour of 2- versus 4-plate fixation and bony structures after Le Fort I impaction surgeries using three-dimensional finite element analysis (3D-FEA). Two 3D-FEA models were created to fixate the impacted maxilla at the Le Fort I level as 2-plate fixation at the piriform rims (IMP-2 model) and 4-plate fixation at the zygomatic buttresses and piriform rims (IMP-4 model). The IMP-2 model contained 225 664 elements and 48 754 nodes and the IMP-4 model consisted of 245 929 elements and 53 670 nodes. The stresses in each maxillary model were computed. The models were loaded on one side, at the molar-premolar region, in vertical, horizontal and oblique directions to reflect the chewing process. It was concluded that the use of 4-plate fixation following Le Fort I advancement Surgery provides fewer stress fields on the maxillary bones and fixation materials than 2-plate fixation from a mechanical point of view.eninfo:eu-repo/semantics/closedAccess3D finite element analysisLe Fort 1 osteotomyImpaction surgeryInternal fixationArticleQ23815863WOS:00026299080000919046854