Evaluation of osteotomy fixation changing the number, the extension and the location of the plates.
We used a two-dimensional model that simulated a fractured human mandible to study the extent of load resistance of different plates. We studied 49 bovine ribs in seven groups using varying number (1 or 2), lengths of plates (4 or 6-holes), and location (near the lower or upper border). The number and location of plates had a greater effect on resistance to load than length of plates. The best mean resistance values were achieved by a combination of two parallel plates secured near the lower and upper borders, followed by single plates secured near the upper border. The lowest values were with single plates secured close to the lower border.
Trivellato
Alexandre Elias
AE
Oral and Maxillofacial Area, Piracicaba Dental School, State University of Campinas, Unicamp, São Paulo, Brazil. aeliastrivellato@yahoo.com.br
Passeri
Luis Augusto
LA
D000818:Animals; D001696:Biomechanical Phenomena; D001860:Bone Plates; D001863:Bone Screws; D002417:Cattle; D019245:Compressive Strength; D003799:Dental Stress Analysis; D006801:Humans; D019248:Jaw Fixation Techniques / Q000295:instrumentation*; D008337:Mandibular Fractures / Q000601:surgery*; D010027:Osteotomy / Q000295:instrumentation