The role of temporomandibular disorders in the genesis of tinnitus

Temporomandibular disorders (TMD) are musculoskeletal pain conditions characterized by pain in the temporomandibular joint (TMJ) and/or mastication muscles. Patients with TMD are frequently affected by otolaryngological symptoms like tinnitus, with a prevalence ranging from 2% to 59% of cases. There is still a debate in the scientific community about the relationship between tinnitus and TMD and actually the causal connection between them is not well understood. A possible explanation could be found in the ontogenetic development and in the mechanical and neuronal connections of the masticatory system and the middle ear. Additionally a potential role of TMD in tinnitus onset is suggested by the fact that TMD treatment can successfully alleviate or cure tinnitus symptoms.