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Introduction: Abrasion of teeth significantly affects electromyography results. Analyzing electromyograms of patients who needs complex rehabilitation, it is necessary to note absence of dissociation of the structure, appearance of spontaneous activity in one of the muscles, presence of the prevailing chewing side, appearance of low-amplitude oscillations in biocurrents. The aim: The purpose of this study was to determine the role of anterior teeth in the rehabilitation of patients with increased abrasion. Material and methods: The experimental group involved patients (men and women) aged 20 to 59 years with increased abrasion of teeth I-III degrees. Patients were provided with all the necessary complexes of rehabilitation measures: direct restorations with composite materials using the adhesive system of the Vth generation (in case of light abrasion), indirect ceramic restorations (severe abrasion). All work was conducted in accordance with the Declaration of Helsinki (1964) and was approved by the Ethical Committee of the academy. Results: Activity of the right masseter muscle was slightly higher than that of the left one (313.42 ± 97.96 ms. against 226.69 ± 35.39 ms. respectively). At the same time the resting time of the left and right masseter muscles slightly differs (300.57 ± 30.93 ms. and 307.96 ± 49.47 ms. respectively). Conclusions: Rehabilitation of patients with increased abrasion using combined methods (direct composite restorations with the adhesive system of Vth generation and indirect ceramic restorations), give the possibility to restore the masticatory function (evidenced by an increase in the activity of right and leftmasseter muscle on 2%, a decrease in the rest phase on 20% almost and an increase in amplitude on 2.9%).

Scientific researches suggest posture problems as a factor affecting the occurrence of occlusion anomalies as well as their complications. The surface of the tongue may reflect disorders in digestion, cardiac activity, nervous and endocrine systems. In the literature, there is data that the tongue can help in the diagnosis of many diseases, because its general appearance is in a significant relation with its anatomical features. Receptors of its mucous membrane are closely related to the central nervous, cardiovascular, endocrine and locomotor systems. Aim. The purpose of the study was to determine the correspondence between the location of the tongue median line and the degree of distortion of the vertebral column at different levels in children with scoliosis. Materials and methods. Totally 56 children (30 girls, 26 boys) aged 11-14 years were examined, with a duration of musculoskeletal disorders 1-3 years. For each participant, the oral cavity examination was performed, the position of the middle line of the tongue was determined. X-ray images of vertebral column of patients from investigated groups were analyzed. Results. In the group with 1 year duration of the disease 25.02% patients had distorted median line of the tongue, in the group with 2 years of duration of the disease - 65,52% participants had the deviation of the medial line of the tongue, in the group with 3 years of duration of the disease 86.66% of patients had the deviation of the median line of the tongue. Conclusions. This research allows us to recommend paying attention not only to the size, color, state of the papillae of the tongue, but also to the position of the middle line, whose distortion may indicate the deviation of the vertebral column in different portions. Further research is needed to detect the mechanisms of influence of the spine and the influence of skeletal muscles on muscles of the maxillofacial area, which are involved in the formation of occlusion and function of the organs of the oral cavity.

The aim: The purpose of the study was to determine the correspondence between the location of the tongue median line and the degree of distortion of the vertebral column at different levels in children with scoliosis. Materials and methods: Totally 56 children (30 girls, 26 boys) aged 11-14 years were examined, with a duration of musculoskeletal disorders 1-3 years. For each participant an oral cavity examination was performed, the position of the middle line of the tongue was determined. X-ray images of vertebral column of the patients from investigated groups were analyzed. Results: In the group with 1year duration of the disease 25.02% patients had a violation of the medial line of the tongue, in the group with 2 years of duration of the disease - 65,52% participants had the deviation of the medial line of the tongue, in the group with 3 years of duration of the disease 86.66% of patients had the deviation of the medial line of the tongue. Conclusions: This research allows us to recommend paying attention not only to the size, color, state of the papillae of the tongue, but also to the position of the middle line, which distortion may significate the deviation of the vertebral column in different portions.

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