THE RESULTS OF ELECTROMYOGRAPHIC STUDIES OF MASSETERS IN CHILDREN WITH CEREBRAL PARALYSIS

Abstract

The authors detail a new method of EMG studies in children with cerebral paralysis. EMG provides benefits as a highly informative and reliable technique with the ability to visualize and determine the parameters of the investigated muscles electroexitability dental-jaw apparatus in the diagnosis of dental-jaw anomalies among children with a cerebral paralysis. The aim of the investigation was the study of the bioelectrical activity of masseters, temporal muscles and round oral muscle in patients with diplegic form of CSIP. The held investigations have led to the following conclusions: the considerable reduction of the difference of the indices of tone of contracted and relaxed muscles and correspondingly the coefficient of contraction, that speak of the reduced ability of neuromuscular apparatus to excite and conduct and of its being the remote effect of the affection of motor zone of cortex at CSIP, is characteristic for all the examined patients. The indices of the difference of contractile and plastic tones of muscles in 6-year-old children were greater than in 12-year-old ones. This phenomenon speaks of the decrease of contractibility of masseters at growing up.