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 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 20 Issue: 3
  • Publication Date: 2009
  • Doi Number: 10.1097/scs.0b013e3181a2d871
  • Journal Name: Journal of Craniofacial Surgery
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.775-779
  • Keywords: Le Fort I, advancement, stability, rigid fixation
  • Istanbul Medipol University Affiliated: No


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 upper 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. © 2009 Lippincott Williams & Wilkins, Inc.