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Electromyographic characteristic of orbicularis oris in patients with dental crowding in permanent occlusion.
Dmytrenko, Maryna I; Kuroiedowa, Vira D.
Afiliação
  • Dmytrenko MI; Higher Medical Educati onal Institution of Ukraine,"Ukrainian Medical Stomat ological Acade my", Poltava, Ukraine, e-mail: dmitrenko25@mail.ru.
  • Kuroiedowa VD; Higher Medical Educati onal Institution of Ukraine,"Ukrainian Medical Stomat ological Acade my", Poltava, Ukraine.
Wiad Lek ; 69(3 pt 2): 462-464, 2016.
Article em En | MEDLINE | ID: mdl-27717925
INTRODUCTION: electromyographic indices were developed for complex analysis of functional condition of orbicularis oris. AIM: to study electromyographic indices of orbicularis oris in patients with dental crowding in permanent occlusion. MATERIALS AND METHODS: thirty four patients with malocclusion and a severe degree of severity of dental crowding (15 males, 19 females, aged 16-29 years) who underwent orthodontic examination. The treatment group was divided into three: Group Ia comprised 11 subjects with mandibular crowding (mean age 19,27 ± 1,08 years); group Ib, 10 patients with maxillary dental crowding (mean age 20,10 ± 1,60 years) and group Ic, 13 subjects with both maxillary and mandibular crowding (mean age 20,15 ± 1,45 years). The control group consisted of 10 patients with malocclusions but without dental crowding (mean age 20,70 ± 1,32 years). The findings were compared with similar indices in subjects with normal occlusion (mean age 21,3 ± 1,25 years). The index of orbicularis oris activity (ACTIV,%) was determined for each patient. A Student's t-test was used to analyze statistical difference between different groups. RESULTS: patients having crowding of maxillary teeth showed greater activity of muscles of the upper lip during maximum voluntary clenching (АCTІV= -0,99±7,44%). Activity of the muscles of the lower lip in patients with crowding of mandibular teeth (АСTІV=20,52±4,22%) and crowding of maxillary and mandibular teeth (АСTІV=17,93±4,33%) is prevailing. CONCLUSIONS: аctivity of the orbicularis oris in patients with malocclusion, complicated by dental crowding depend on clinical localization of crowding.
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Base de dados: MEDLINE Assunto principal: Músculos Faciais / Lábio / Má Oclusão / Contração Muscular Limite: Adolescent / Adult / Female / Humans / Male Idioma: En Ano de publicação: 2016 Tipo de documento: Article
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Base de dados: MEDLINE Assunto principal: Músculos Faciais / Lábio / Má Oclusão / Contração Muscular Limite: Adolescent / Adult / Female / Humans / Male Idioma: En Ano de publicação: 2016 Tipo de documento: Article