[Mandibular synthesis. Placement of the synthesis as a function of mandibular stress]

After recalling Michelet's principles of mandibular osteosynthesis, the authors relate their experiences after 18 months of biomechanical analysis. They define the best locations for osteosyntheses according to calculations of when flexion and torsion occur, taking anatomical conditions into account. Details are given of the position of the plate or plates according to the location of the fracture or osteotomy (horizontal branch, symphysal and para-symphysal region and angle). Analysis of stresses within the osteosynthesized mandible has resulted in the development of what seems to be a reliable medium. One hundred anf forty facial osteosyntheses they have carried out confirm their faith in the safety of the method.