Maxillofacial reconstruction systems have presented an incredible advance in terms of implementation techniques and properties. These systems have been adapted throughout history, through medical and orthopedic principles, exceeding minimum requirements in relation to their resistance (to provide functional stability), ductility, and above all, biocompatibility. In this way, experimental studies in both biomechanics and pathophysiology of osseointegration have given these system high reliability and prognostic accuracy. However, there are limitations and requirements to be considered, in order to avoid complications such as fracture of the material, loss of stability of the rigid fixation, infection, both intra and extra oral exposure of the reconstruction plate, among others. The purpose of this article is to report a case of extra oral exposure of a mandibular reconstruction osteosynthesis plate in a patient undergoing hemimadibulectomy after severe mandibular osteomyelitis, presenting the diagnosis, management and treatment performed by the team of specialists.