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Strength of scapular elevation in women with TMD and asymptomatic women


Temporomandibular joint
Isometric contraction
Muscle strength

How to Cite

Santos LF dos, Foltran-Mescollotto F, Castro-Carletti EM de, Pelai EB, Moraes M de, Rodrigues-Bigaton D, et al. Strength of scapular elevation in women with TMD and asymptomatic women: a cross-sectional study. Braz. J. Oral Sci. [Internet]. 2022 Jul. 1 [cited 2024 Jul. 18];21(00):e228356. Available from:


Temporomandibular disorder (TMD) is recognized for its high prevalence, presenting characteristic signs and symptoms. Cervical spine pain is present in 70% of diagnosed TMD cases. Aim: To verify if women with TMD present changes in isometric muscle strength in the scapula elevation. Methods: This is an observational, cross-sectional study. Thirty-five women, aged 22.89±2.04 years, were divided into the TMD group (TMDG), diagnosed with TMD according to the DC/TMD, and control group (CG), with asymptomatic individuals. The volunteers accessed a online link by the smartphone in order to answer questions on personal data, the Fonseca Anamnestic Index (FAI), Neck Disability Index (NDI), and Masticatory preference. In all participants, evaluation of the force of the scapula elevation muscles was performed, using a load cell model MM-100 (Kratos® SP, Brazil). Data were analyzed descriptively using the maximum, mean, and standard deviation and a two-way ANCOVA test was applied for all variables. A significance level of 5% was considered. Results: There were no statistically significant differences between the TMDG and CG for the maximal and mean muscle strength of scapular elevation. There were statistically significant differences in FAI (p <0.001*) between the CG and the TMDG. Conclusion: Based on the results, it was not possible to confirm the hypothesis that women diagnosed with TMD present lower isometric strength during scapular elevation (right/left).


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Copyright (c) 2021 Lúcio Ferreira dos Santos, Fabiana Foltran-Mescollotto, Ester Moreira de Castro-Carletti, Elisa Bizetti Pelai, Marcio de Moraes, Delaine Rodrigues-Bigaton, Adriana Pertille


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