The analysis in based on 12,096 patients with fractures of the mandible admitted to and treated in the Clinical of Oral and Maxillofacial Surgery of Iaşi in the interval 1951-1995. Posttreatment complications were found in 10.52% of the cases, 9.81% of them being of inflammatory type. Anatomo-clinically these consisted in suppurations of the soft tissues, osteitis and osteomyelitis. The prejudices caused by these complications were multiple: longer hospital stay, additional suffering for the patient, temporary work inability, higher treatment costs.