Mandibular kinematics and masticatory muscles EMG in patients with short lasting TMD of mild-moderate severity

Autor(es)

De Felicio, Claudia Maria ^[1] ; Mapelli, Andrea ^{[1, 2]} ; Sidequersky, Fernanda Vincia ^[2] ; Tartaglia, Gianluca M. ^[2] ; Sforza, Chiarella ^[2]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Sch Med, Dept Ophthalmol Otorhinolaryngol & Head & Neck Su, BR-14049 Ribeirao Preto - Brazil

^[2] Univ Milan, Dipartimento Sci Biomed Salute, Lab Funct Anat Stomatognath Apparat, FARC, Fac Med, Milan - Italy

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF ELECTROMYOGRAPHY AND KINESIOLOGY; v. 23, n. 3, p. 627-633, JUN 2013.
• Citações Web of Science: 22

Resumo

Mandibular kinematic and standardized surface electromyography (sEMG) characteristics of masticatory muscles of subjects with short lasting TMD of mild-moderate severity were examined. Volunteers were submitted to clinical examination and questionnaire of severity. Ten subjects with TMD (age 27.3 years, SD 7.8) and 10 control subjects without TMD, matched by age, were selected. Mandibular movements were recorded during free maximum mouth opening and closing (O-C) and unilateral, left and right, gum chewing. sEMG of the masseter and temporal muscles was performed during maximum teeth clenching either on cotton rolls or in intercuspal position, and during gum chewing. sEMG indices were obtained. Subjects with TMD, relative to control subjects, had lower relative mandibular rotation at the end of mouth opening, larger mean number of intersection between interincisal O-C paths during mastication and smaller asymmetry between working and balancing side, with participation beyond the expected of the contralateral muscles (P < 0.05, t-test). Overall, TMD subjects showed similarities with the control subjects in several kinematic parameters and the EMG indices of the static test, although some changes in the mastication were observed. (C) 2013 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 09/13525-9 - Cinemática mandibular e análise eletromiográfica na função motora oral
• Beneficiário: Cláudia Maria de Felício
• Modalidade de apoio: Bolsas no Exterior - Pesquisa