title: A comparative in vitro study on fixation of sagittal split osteotomies with Würzburg screws, Champy miniplates, and Biofix (biodegradable) rods.
abstract: A bilateral sagittal split osteotomy was performed on seven fresh cadaver mandibles. Three different systems of fixation were mechanically tested on 14 sites. Tensile diagrams were obtained in which the (offset-) yield point was measured. This resulted in mean yield stresses of 199 N for bi-cortical self-tapping screws (n = 6), 49 N for miniplates with monocortical screws (n = 5), and 113 N for bi-cortical biodegradable rods (n = 3).
authors.affiliation: Department of Oral and Maxillofacial Surgery, Kennemer Gasthuis, Haarlem, The Netherlands.
authors.forename: J P
authors.initials: JP
authors.lastname: Bouwman
authors.forename: D B
authors.initials: DB
authors.lastname: Tuinzing
authors.forename: P J
authors.initials: PJ
authors.lastname: Kostense
mesh_terms: D000704:Analysis of Variance; D001673:Biodegradation, Environmental; D001860:Bone Plates; D001863:Bone Screws; D006801:Humans; D016268:Internal Fixators; D008334:Mandible / Q000601:surgery*; D010027:Osteotomy / Q000379:methods*; D013223:Statistics as Topic