Bezkorovaina L. P., Harliauskaite I. Yu., Ponomarenko Yu. V.

ELECTROMYOGRAPHY IN THE STUDY OF THE FUNCTIONAL STATUS OF MASTIC MUSCLES IN HEALTHY PEOPLE

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About the author:

Bezkorovaina L. P., Harliauskaite I. Yu., Ponomarenko Yu. V.

Heading:

DENTISTRY

Type of article:

Scientific article

Annotation:

Electromyography (EMG) is an objective method of studying the neuromuscular system by recording the bioelectrical activity of the nerve and muscle. The primary purpose of our study was to develop and validate an EMG protocol for the study of masticatory muscles and to determine the normative values of muscle bioelectrical activity at rest and during functional tests in healthy individuals. We examined 12 healthy individuals aged 18 to 35 with no complaints from the dentoalveolar pathology, intact dentition, or physiological occlusion. Surface EMG of the masseter and temporalis muscles was performed simultaneously and symmetrically on both sides. The examination protocol included a study of bioelectrical activity at rest, during teeth clenching, during mouth opening, during dynamic tests, investigation and of the mandibular reflex in the position with the mouth open and in the position with slight teeth clenching. The average values of the complex EMG indicators were obtained. The values of the maximum amplitude of the bioelectrical activity of the masticatory and temporalis muscles at rest and during functional loads, the duration of muscle bioelectrical activity decay (activation) during the mandibular reflex test, the number of chewing movements and the duration of the chewing cycle in different chewing patterns were calculated. The results are helpful for comparison with similar indicators in patients with dentoalveolar pathology. The priority of the approach to the study of normality and pathology justifies the search for new methods of early diagnosis, as well as methods of prevention and treatment of patients with MLD of TMJ.

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Publication of the article:

«Bulletin of problems biology and medicine», 2023 Issue 4, 171, 417-426 pages, index UDC 612.311:612.741

DOI:

10.29254/2077-4214-2023-4-171-417-426