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Immediate effect of nonspecific mandibular mobilization on postural control in subjects with temporomandibular disorder: a single-blind, randomized, controlled clinical trial Efeito imediato da mobiliza o mandibular inespecífica sobre o controle postural em indivíduos com disfun o temporomandibular: ensaio clínico controlado, randomizado, simples cegoKeywords: fisioterapia , articula o temporomandibular , transtornos da articula o temporomandibular , equilíbrio postural , physical therapy , temporomandibular joint , temporomandibular joint disorders , equilibrioception Abstract: BACKGROUND: Temporomandibular disorder (TMD) is considered multifactorial and is defined as a group of pain conditions characterized by functional stomatognathic system alterations, which may be affected by or related disrupted postural control. OBJECTIVE: Assess the immediate effect of nonspecific mandibular mobilization (NMM) on the postural control of subjects diagnosed or not with TMD. METHOD: A simple-blind, randomized, controlled clinical trial was performed involving 50 subjects of both genders assigned to two groups: the TMD group and the control group. TMD was diagnosed according to the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD). A stabilometric assessment was performed by testing subjects in a quiet stance on a dual force platform under two visual conditions (eyes open and eyes closed). The Center of Pressure (CoP)-related variables analyzed were displacement, amplitude, speed of anterior-posterior (AP) and medial-lateral (ML) displacements and CoP sway area. The mean values of each variable were compared, considering the accepted significance value of p<0.05. RESULTS: A significant difference between the pre- and post-NMM means could be observed in subjects diagnosed with TMD under the closed-eyes visual condition. There was a statistically significant difference in the CoP sway area (p<0.03) in the ML displacement COPML (p<0.006) and ML amplitude COPML (p<0.01) and in the variable speed in the AP COPAP (p<0.03) and ML COPML (p<0.03) directions, simultaneously. CONCLUSION: These results indicate that nonspecific temporomandibular joint mobilization contributes to the immediate improvement of postural control in patients with TMD. CONTEXTUALIZA O: A disfun o temporomandibular (DTM) é considerada multifatorial e se define como um grupo de condi es dolorosas que se caracteriza por apresentar altera es funcionais do sistema estomatognático que podem estar relacionadas à perturba o ou a uma contribui o em rela o ao controle da postura. OBJETIVO: Verificar o efeito imediato da mobiliza o mandibular inespecífica (MMI) sobre o controle postural em indivíduos com e sem diagnóstico de DTM. MéTODO: Realizou-se um ensaio clinico controlado, randomizado, simples cego, com 50 indivíduos de ambos os gêneros, alocados em dois grupos: grupo DTM e grupo controle, diagnosticados segundo o RDC/TMD. Realizou-se uma avalia o estabilométrica com os indivíduos sobre uma plataforma de for a, em duas condi es visuais: olhos abertos e fechados. As variáveis referentes ao centro de oscila o do corpo (COP) analisadas foram: deslocam
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