title: Biomechanical analysis of titanium fixation plates and screws in sagittal split ramus osteotomies.
abstract: OBJECTIVE
  The aim of the study was to evaluate the mechanical behavior of three different fixation methods used in the bilateral sagittal split ramus osteotomy.
  
  
  METHODS
  Three different three-dimensional finite element models were created, each corresponding to three different fixation methods. The mandibles were fixed with double straight 4-hole, square 4-hole, and 5-hole Y plates. 150 N incisal occlusal loads were simulated on the distal segments. ANSYS software ((v 10; ANSYS Inc., Canonsburg, PA) was used to calculate the Von Mises stresses on fixative appliances.
  
  
  RESULTS
  The highest Von Mises stress values were found in Y plate. The lowest values were isolated in double straight plate group.
  
  
  CONCLUSIONS
  It was concluded that the use of double 4-hole straight plates provided the sufficient stability on the osteotomy site when compared with the other rigid fixation methods used in this study.
authors.forename: F
authors.initials: F
authors.lastname: Atik
authors.forename: M S
authors.initials: MS
authors.lastname: Atac
authors.forename: A
authors.initials: A
authors.lastname: Özkan
authors.forename: Y
authors.initials: Y
authors.lastname: Kılınc
authors.affiliation: Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Gazi University, Ankara, Turkey.
authors.forename: M
authors.initials: M
authors.lastname: Arslan
mesh_terms: D001696:Biomechanical Phenomena; D001860:Bone Plates; D001863:Bone Screws; D020342:Finite Element Analysis; D006801:Humans; D008334:Mandible / Q000601:surgery*; D010027:Osteotomy / Q000295:instrumentation / Q000379:methods*; D059229:Osteotomy, Sagittal Split Ramus; D013314:Stress, Mechanical; D014025:Titanium
chemical_list: D014025:Titanium