The relevance of studying the distal occlusion with the malfunction of chewing and mimic muscles of patients with different types of breathing
The aim of our research was finding the pathological changes in mimic and chewing muscles of patients with distal occlusion and various types of breathing. The electromyography method was used. Revealed that children aged from 9 - 12 years with distal occlusion and physiological type of breathing have bioelectrical muscle activity, expressed in correlation coefficient of the period of activity (Ta) and the period of rest of the muscle (Tc) makes up: for chewing muscles - 1.19 - 1.21, for circular muscle of the mouth - 1.20, for temporal muscles - 1.33 - 1.36. We note, that the overall deviation of the measured values from normative figures fluctuates in the range of 2.3 … 13.4%, and ratio coefficient of Ta:Tc - in the range of 2.3 … 8.5%. At the same time, the correlation coefficient of Ta and Tc of patients with distal occlusion and pathological type of breathing makes up: for chewing muscles: 1.14 - 1.16, for circular muscle of the mouth - 1.04 and for temporal muscles - 1.40 - 1.42, herewith the total deviation of the measured values from normative figures fluctuates in the range 7% - 35.9%, and correlation coefficient Ta:Tc - in the range 8 - 17%. Thus, it is determined, that patients with distal occlusion and physiological type of breathing compared to control group that have got the changes of bioelectrical muscle activity are the manifestation of forming of compensating reaction of the muscles and do not influence the appearance of the patient; the changes in bioelectrical muscle activity of children with distal occlusion and pathological type of breathing show the forming of pathological reaction of the muscles, accompanied by the negative changes in the appearance of the patient.