Surgical Treatment of a Severe Bilateral Coronoid Process Hyperplasia with 5-Year Follow-Up

Coronoid hyperplasia can be defined as an abnormal bony elongation of a histologically normal coronoid process, mainly resulting in progressive limitation of mouth opening but can also cause pain and limitation of the mandibular movements [1-4]. It´s etiopathogenesis is still unknown and several hypotheses are discussed, e.g.:trauma, temporal muscle hyperactivity, endocrine system influence, genetic inheritance and temporomandibular dysfunction. Coronoid hyperplasia is often confused with other entities like osteoma, exostoses, osteochondroma and temporomandibular joint disorder