Abstract
ABSTRACT Purpose: to investigate the existence of changes in the electromyographic patterns of the mentalis and inferior orbicularis oris muscles in oronasal breathers, submitted to massage therapy on the mentalis muscle. Methods: a controlled blind placebo experiment, with a sample of 19 oronasal breathers (1 man and 18 women), mean age (standard deviation) 22.3 (2.63) years, randomly divided into control and experimental groups, respectively with 7 and 12 volunteers. The experimental group alone underwent myotherapy with massages for 3 months, while electromyographic data were collected from both groups at the beginning and end of the treatment, both at rest and when swallowing water. The analysis of variance was conducted to test the existence of differences between the means; the 5% significance level was used. Results: the analysis of variance revealed signs of interaction between the group and phase effects when analyzing the root mean square values of both the inferior orbicularis oris and the mentalis muscles. As expected, no signs of significant differences were found between the means of the phases in the control group. On the other hand, signs of significant difference were found in the experimental group, with reduced root mean square values in both muscles. The inferior orbicularis oris muscle, which in the pre-phase had a mean (standard deviation) of 202.10 (161.47) µV, had, in the post-phase, values of 131.49 (159.18) µV. The mentalis muscle, in its turn, had in the pre- and post-phase, respectively, a mean (standard deviation) of 199.31 (279.77) µV and 114.58 (253.56) µV. Conclusion: given that no effect was detected in the control group, the decrease in the root mean square values of the mentalis and inferior orbicularis oris muscles in oronasal breathers was attributed to the massage therapy on the mentalis muscle.
Highlights
Breathing is indispensable to humans because it provides the necessary gas exchange that nourishes the tissues
Conclusion: given that no effect was detected in the control group, the decrease in the root mean square values of the mentalis and inferior orbicularis oris muscles in oronasal breathers was attributed to the massage therapy on the mentalis muscle
This study aimed to investigate the existence of changes in the electromyographic patterns of the mentalis and orbicularis oris muscles in oronasal breathers submitted to massage therapy on the mentalis muscle
Summary
Breathing is indispensable to humans because it provides the necessary gas exchange that nourishes the tissues. Once the causes of mouth breathing are solved, it is not uncommon to find oronasal breathing, a condition resulting from either a vicious habit or a preserved muscle memory[5,6]. Such a situation is not always given due attention, possibly because it is often related to chronic conditions whose treatment is difficult and require continuous control (such as allergic rhinitis), and because of the assumption that oronasal breathing does not influence the difference between intra- and extraoral pressure and does not compromise the muscular system[5,6,7,8,9]
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