HERALD of North-Western State Medical University named after I.I. MechnikovHERALD of North-Western State Medical University named after I.I. Mechnikov2618-71162618-9704Eco-Vector1755010.17816/mechnikov201911455-58Research ArticleStandartized indicators of masticatory muscles functional activity for patients with transversal intermaxillary anomaliesNikolaevAndrey V.<p>Assistant professor, Department of Orthodontics</p>nikolaev23@gmail.comPopovSergey A.<p>D.M.D., D.Sc., Head of the orthodontics department</p>sergey.popov@szgmu.ruNorth-Western State Medical University named after I.I.Mechnikov0112201911455582710201910112019Copyright © 2020, Nikolaev A.V., Popov S.A.2020<p>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.</p>superficial electromyographytransversal anomaliesmaxilla-facial anomaliesповерхностная электромиографиятрансверзальные аномалиидеформации челюстно-лицевой области[Арсенина О.И., Шишкин К.М., Шишкин М.К., Попова А.В. Компенсаторно-приспособительные изменения зубоальвеолярного комплекса при уменьшенном размере челюстей // Стоматология. − 2013. – Т. 92. − № 5. – С. 29−37. [Arsenina OI, Shishkin KM, Shishkin MK, Popova AV. Adaptive dentoalveolar changes by insufficient sizes of the jaws. Stomatologija (Moskva). 2013;92(5):29-37. (In Russ.)]][Николаев А.В., Андреищев А.Р., Кутукова С.И. Сравнение биомеханики хирургически ассоциированного расширения нёба при использовании дистракционных аппаратов с назубным и накостным типами фиксации // Стоматология. − 2017. – Т. 96. − № 5. – С. 48−55. [Nikolaev AV, Andreishchev AR, Kutukova SI. Comparative biomechanical study of surgically assisted rapid palatal expansion with tooth-borne and bone-borne expanders. Stomatologija (Moskva). 2017;96(5):48-55. (In Russ.)]. https://doi.org/10.17116/stomat201796548-55.][Попов С.А., Сатыго Е.А. Диагностическое значение стандартизированных электромиографических показателей жевательных мышц // Российский стоматологический журнал. – 2009. – № 6. – С. 18−20. [Popov SA, Satygo EA. Diagnostic significance of standardized electromyographic parameters of masseters. Rossiyskiy stomatologicheskiy zhurnal. 2009;(6):18-20. (In Russ.)]][Постников М.А. Оптимизация ортодонтического лечения детей с мезиальной окклюзией в период смены и после смены зубов: Автореф. дис. … д-ра мед. наук. – Самара, 2016. – 46 с. [Postnikov MA. Optimizatsiya ortodonticheskogo lecheniya detey s mezial’noy okklyuziyey v period smeny i posle smeny zubov. [dissertation abstract] Samara; 2016. 46 р. (In Russ.)]. Доступно по: https://search.rsl.ru/ru/record/01006647024. Ссылка активна на 14.09.2019.][Степанов Г.В. Комплексная диагностика и лечение аномалий прикуса при зубоальвеолярном укорочении: Автореф. дис. … д-ра мед. наук. – Самара, 2011. – 43 с. [Stepanov GV. Kompleksnaya diagnostika i lecheniye anomaliy prikusa pri zuboal’veolyarnom ukorochenii. [dissertation abstract] Samara; 2011. 43 р. (In Russ.)]. Доступно по: https://search.rsl.ru/ru/record/01004841716. Ссылка активна на 14.09.2019.][Tecco S, Caputi S, Festa F. Electromyographic activity of masticatory, neck and trunk muscles of subjects with different skeletal facial morphology – a cross-sectional evaluation. J Oral Rehabil. 2007;34(7):478-486. https://doi.org/10.1111/j.1365-2842.2007.01724.x.][Ferrario VF, Sforza C, Serrao G, et al. The effects of a single intercuspal interference on electromyographic characteristics of human masticatory muscles during maximal voluntary teeth clenching. Cranio. 1999;17(3):184-188. https://doi.org/10.1080/08869634.1999.11746093.][Ferrario VF, Sforza C, Colombo A, Ciusa V. An electromyographic investigation of masticatory muscles symmetry in normo-occlusion subjects. J Oral Rehabilitation. 2003;27(1):33-40. https://doi.org/10.1046/j.1365-2842.2000.00490.x.][Ferrario VF, Serrao G, Dellavia C, et al. Relationship between the number of occlusal contacts and masticatory muscle activity in healthy young adults. Cranio. 2002;20(2):91-98. https://doi.org/10.1080/08869634.2002.11746196.]