The temporomandibular joint (TMJ) is a gliding joint formed by the mandibular condyle, the mandibular fossa of the temporal bone, a ligamentous synovial capsule, an articular disk, and retrodiskal tissue allow for smooth joint movement. 1 This synovial joint showed free nerve endings and different sensory nerve organs regarding the sensorial and proprioceptive innervation by the masseteric and auriculotemporal nerves and contributes to nourish and lubricate avascular surfaces and to protect bacterial infections. 1 Temporomandibular disorders (TMD) are the most common orofacial impairment and the second most common musculoskeletal condition after chronic low back pain affecting the 5%-12% of the entire population and involving a high economic impact (up to $4 billion in USA). 2 TMD are heterogeneous musculoskeletal disorders characterised by symptoms associated with limited range of movement, adventitious sounds (eg clicking, crepitus, grating, popping),

Current neuroanatomical evidence showed the anatomical relationship between the temporomandibular joint innervation with the vestibular system. However, there is no clear evidence regarding if temporomandibular disorders are associated with balance impairments. Therefore, the aims of this study were to assess the clinical relevance of stabilometric features in populations with temporomandibular disorders and to analyze the influence of the mandibular position and visual afference in the balance scores in both healthy and clinical populations. This observational study was conducted in one sample of healthy controls and one sample with temporomandibular disorders. Sociodemographic data (age, gender, height, weight, body mass index, and foot size), clinical data (presence or absence of temporomandibular disorders) and stabilometric data under six different conditions were collected. Sixty-nine subjects (43.5% male; 36.2% patients) were assessed. No differences between Temporomandibular disorders and healthy groups were found in any stabilometric outcomes, unlike oscillation area with closed eyes and medium interscuspidal position (p < 0.01). Although visual feedback showed to be relevant (p < 0.0001), mandibular position produced no differences in any stabilometric measurement (p > 0.05). This study found that healthy subjects and patients with temporomandibular disorders showed no balance differences in the stabilometric outcomes assessed. Although visual input played an important role in the balance, mandibular position seems to be irrelevant.