Comparison of Stability of Resorbable and Titanium Fixation Systems by Finite Element Analysis After Maxillary Advancement Surgery

Uckan S., Veziroglu F. , Soydan S. S. , Uckan E.

JOURNAL OF CRANIOFACIAL SURGERY, vol.20, no.3, pp.775-779, 2009 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 20 Issue: 3
  • Publication Date: 2009
  • Doi Number: 10.1097/scs.0b013e3181a2d871
  • Page Numbers: pp.775-779


In this study, three-dimensional modeling and finite element analysis were used to evaluate and compare the stability of Le Fort I osteotomy fixed with titanium and resorbable fixation systems under molar and incisor bite forces. A three-dimensional model of 5-mm advanced hemimaxilla was generated. Contact analyses between the tipper and lower segments were prescribed. Two L-plates were inserted on this model via simulation. Displacement, principal stresses, and principal elastic strains were evaluated under 44-N, 125-N incisor and, 250-N molar bite forces. These results suggest that Le Fort I osteotomies fixed with titanium miniplates and screws were stable under all tested forces. However, in resorbable group, under incisor bite forces greater than 44 N, there is a great risk of plate fracture, screw deformation, and/or failure.