Standartized indicators of masticatory muscles functional activity for patients with transversal intermaxillary anomalies

The study involved patients with a normal intermaxillary ratio and with a transversal maxillary deficiency. The age of the patients varied between 25 and 40 years. In all the examined patients, orthodontic treatment had not been previously performed. The group of patients with transversal anomalies involved 45 clinical cases, the group of patients with neutral occlusion involved 42 cases. Superficial electromyographic research was carried out according to the method of Professor V.F. Ferrario. The comparison of the functional activity parameters of the maxillofacial region using standardized coefficients of surface electromyography revealedsignifica abnormal indicators in the patients with transversal anomalies compared to the patients with neutral occlusion. This fact must be taken into account when planning orthodontic treatment.