title: Plate osteosynthesis of the mandibular condyle.
abstract: The aim of this study is to evaluate and compare the biomechanical stability of various osteosynthesis materials for mandible condylar-process fractures. On 160 porcine mandibles, four different monocortical plating techniques (40 per group) were investigated. Condyles were fractured at a defined location from the incisure to the posterior border. After correct anatomical reduction the fractures were plated, using four different techniques. Osteosynthesis materials used were the delta plate, the trapezoid plate, the dynamic compression plate and double mini-plates. Each group was subjected to linear loading in lateral to medial, medial to lateral, anterior to posterior and posterior to anterior directions by a universal mechanical testing machine TIRAtest 2720. Yield load, yield displacement were measured for the different plates. Statistically significant differences were noted between the fixation groups in all four directions. Rigid internal fixation with double mini plates showed the best stability in all directions except posterior to anterior. In this direction, the delta-plate resisted the highest loads. In the three other directions, the delta plate was second best with data similar to double miniplates but lower in magnitude.
authors: Department of Oral and Maxillofacial Surgery, Medical Faculty Carl Gustav Carus, Technische Universitaet Dresden, Fetscherstrassle 74, D-01307 Dresden, Germany. guenter.lauer@uniklinikum-dresden.de
authors: Günter
authors: G
authors: Lauer
authors: Dominik
authors: D
authors: Haim
authors: Peter
authors: P
authors: Proff
authors: Gerd
authors: G
authors: Richter
authors: Winnie
authors: W
authors: Pradel
authors: Jochen
authors: J
authors: Fanghänel
authors: Eckhard
authors: E
authors: Pilling
authors: Tomasz
authors: T
authors: Gedrange
authors: Ronald
authors: R
authors: Mai
mesh_terms: D000818:Animals; D001696:Biomechanical Phenomena; D001860:Bone Plates; D019248:Jaw Fixation Techniques; D008335:Mandibular Condyle / Q000293:injuries* / Q000601:surgery*; D008337:Mandibular Fractures / Q000601:surgery*; D010012:Osteogenesis; D013552:Swine