Nearly all types of mandibular fractures have been treated successfully by compression osteosynthesis. Special instruments are required, the bone must be treated correctly, the fragments must be reduced exactly, and the plate must be adapted exactly. Basically, only lag screws are used when there is a lamellar fracture and when a large surface permits support; the dynamic compression plate with oblique lateral screw holes is indicated when the fracture runs transversely. The dynamic compression plate with oblique lateral holes and the additional inlay portion is indicated in oblique fractures and when the alveolar process is weak.