Avaliação dos níveis de dopamina salivar e eletromiografia antes e imediatamente depois da fotobiomodulação com LED infravermelho em crianças com bruxismo do sono

Abstract

Sleep bruxism, which is a chewing muscle activity during sleep that is characterized as rhythmic (phasic) or non-rhythmic (tonic) and is not a movement disorder or a slee er in healthy individuals. They are still scarce as alternatives to treatment, and very controversial. He also knows that the gold standard is a rigid plate for bruxism, but there is difficulty in both access and treatment in children. Photobiomodulation is an alternative for non-invasive treatment and has shown good results in muscle tissue problems. Dopamine is a systemic parameter little explored in the literature. It treats a neurotransmitter responsible, among other things, for controlling muscle movement and sleep disorders and can be quantified also by saliva. Thus, this study evaluated local morphological aspects, through the muscular activity of the chewing and dopamine saliva muscles, to evaluate the systemic aspects of the immediate replacement of LED infrared photobiomodulation in children with bruxism or sleep. The study included 30 children aged 6 to 8 years, divided radomically into three groups: G1-patients without bruxism, G2-patients with bruxism used with LED infrared, G3-patients with bruxism used with rigid occlusal plate. Both groups evaluated the initial assessment of chewing muscle electromyography and salivary collection for investigation of salivary dopamine records. After statistical treatment of the data, it was possible to observe that all the effects provided altered the activity of the resting and chewing chewing muscles. However, in the comparison between groups, the controls were different only for the EMG activity of the masticatory muscles collected at rest between groups G2 (LED) and G3 (Plate). Salivary dopamine concentration did not differ after treatment in three groups (G1, G2, G3). There was also no difference between groups (p> 0.05). Thus, it is concluded that the infrared LED photobiomodulation application is the same local effect of muscle activity as the rigid occlusal plate, using a low- cost option, easy application and gold-like effects. Regarding salivary dopamine levels, the results show no differences between groups.