Functional status of masticatory muscles and buccal epithelium in children with dentition anomalies

Objective. The aim of the paper is to evaluate and compare the bioelectric activity of masticatory and temporal muscles and buccal epithelium status in children with various dentition anomalies using micronucleus test. It is also necessary to find out the correlation between the bioelectric muscle activity and the type of dentition anomaly; between the bioelectric muscles activity and the number of cells with nuclear abnormalities in the buccal epithelium. Materials and Methods. The authors examined 60 children with transitional dentition, who demonstrated occlusion, teeth and dentition anomalies. All patients underwent an electromyographic study of the functional state of the masticatory and temporal muscles. The genetic stability of the buccal epithelium cells was determined using a micronucleus test. A comparative evaluation of masticatory and temporal muscle status was carried out using the asymmetry coefficient of the bioelectric activity amplitude. Results. The analysis of myography data showed that muscular hyperfunction was mostly associated with dentition anomalies (89 % of clinical cases), to a lesser extent (35 %) it was associated with dental anomalies, and it was seldom (33 %) associated with occlusion anomalies...