Lucia Jig--temporomandibular dysfunction promotes muscle relaxation?/Jig de Lucia--disfuncao temporomandibular promove relaxamento muscular?

Assess whether the Lucia Jig is a device that promotes masticatory muscle relaxation in individuals with temporomandibular dysfunction. This study was carried out in three stages (interviews, clinical examination, and laboratory) and participation of adult individuals, between 21 and 40 years of age, of both genders, who replied to the RDC/TMD questionnaire to diagnose muscular temporomandibular dysfunction. The Lucia Jig was prepared and electromyographic examination of the masseter and temporal muscles was performed bilaterally, in the postural condition of the mandibular at rest, after immediately installing the Lucia Jig in the oral cavity and at periods of 5, 10, 15, 20, and 30 min. The values obtained were compared using repeated measures (p < 0.05) over the entire duration of the experiment (0 to 30 min) with the Lucia Jig. There was an increase in the normalized electromyographic signal of the masticatory muscles, with the use of the Lucia Jig over the period of 30 min, with no statistically significant difference. Based on the results of this study through electromyographic data, the device did not promote masticatory muscle relaxation in individuals with muscular temporomandibular dysfunction. Keywords: Lucia Jig, temporomandibular dysfunction, electromyography, masticatory muscles. Avaliar se o Jig de Lucia e um dispositivo que promove relaxamento dos musculos mastigatorios em individuos com disfuncao temporomandibular. O estudo foi realizado em tres etapas (entrevista, exame clinico e laboratorial) com a participacao de individuos adultos, entre 21 e 40 anos de idade, ambos os generos, que responderam ao questionario RDC/TMD para diagnosticar disfuncao temporomandibular muscular. O Jig de Lucia foi confeccionado e o exame eletromiografico foi realizado nos musculos masseter e temporal, bilateralmente, na condicao postural da mandibula em repouso e imediatamente depois da instalacao do Jig de Lucia na cavidade oral nos periodos de 5, 10, 15, 20 e 30 min. Os valores obtidos foram comparados ao longo de toda a duracao do experimento (0 a 30 min) com o Jig de Lucia, utilizando o teste de medidas repetidas (p