Comparison of biomechanical behaviour of maxilla following Le Fort 1 osteotomy with 2-versus 4-plate fixation using 3D-FEA Part 2: Impaction surgery

Atac M. S., Erkmen E., Yucel E., Kurt A.

INTERNATIONAL JOURNAL OF ORAL AND MAXILLOFACIAL SURGERY, vol.38, no.1, pp.58-63, 2009 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 38 Issue: 1
  • Publication Date: 2009
  • Doi Number: 10.1016/j.ijom.2008.10.005
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.58-63
  • Keywords: 3D finite element analysis, Le Fort 1 osteotomy, Impaction surgery, Internal fixation, FINITE-ELEMENT-ANALYSIS, LEFORT-I OSTEOTOMY, ADVANCEMENT SURGERY, INTERNAL-FIXATION, STABILITY, SCREW
  • Gazi University Affiliated: Yes


The 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.