Palinkas M, Rodrigues Lam, de Vasconcelos, Regalo I H, De Luca, Siéssere S, Regalo Sch
Department of Morphology, Physiology and Basic Pathology, School of Dentistry of Ribeirão Preto, São Paulo, Brazil.
Department of Neuroscience and Behavior, National Institute and Technology - Translational Medicine (INCT.TM), Faculty of Medicine of Ribeirão Preto, University of São Paulo, Brazil.
Hippokratia. 2018 Jan-Mar;22(1):3-9.
This study aimed to evaluate the electromyographic activity of the masseter and temporalis muscles of women with rheumatoid arthritis.
The sample comprised 28 women divided into two groups: 14 with rheumatoid arthritis [mean age: 52.2 ± standard deviation (SD): 3 years] and 14 without rheumatoid arthritis (mean age: 49.4 ± SD: 2.4 years). The women were paired by age and body mass index. The electromyographic activity of the masseter and temporalis muscles was analyzed in mandibular tasks: rest, right and left laterality, protrusion, maximal voluntary contraction with and without Parafilm M, habitual and non-habitual chewing. The MANOVA (multivariate analysis of variance) was used to compare the means of the two independent groups, considering as independent variable side and diagnosis of rheumatoid arthritis, and age as the covariate. The Bonferroni correction was used for the post hoc comparisons (p <0.05).
Rheumatoid arthritis group presented an increase in the normalized electromyographic activity of the masticatory muscles and lower mean values for the habitual and non-habitual chewing.
Women with rheumatoid arthritis showed functional alterations in the stomatognathic system, demonstrated through muscular hyperactivity and reduction of masticatory efficiency. HIPPOKRATIA 2018, 22(1): 3-9.
本研究旨在评估类风湿性关节炎女性咬肌和颞肌的肌电活动。
样本包括28名女性，分为两组：14名类风湿性关节炎患者[平均年龄：52.2±标准差（SD）：3岁]和14名无类风湿性关节炎患者（平均年龄：49.4±SD：2.4岁）。这些女性按年龄和体重指数配对。在下颌任务中分析咬肌和颞肌的肌电活动：休息、左右侧方运动、前伸、使用和不使用Parafilm M时的最大自主收缩、习惯性和非习惯性咀嚼。使用多变量方差分析（MANOVA）比较两个独立组的均值，将类风湿性关节炎的诊断和侧别作为自变量，年龄作为协变量。采用Bonferroni校正进行事后比较（p<0.05）。
类风湿性关节炎组咀嚼肌的标准化肌电活动增加，习惯性和非习惯性咀嚼的均值较低。
类风湿性关节炎女性在口颌系统中表现出功能改变，表现为肌肉活动亢进和咀嚼效率降低。《希波克拉底》2018年，22(1): 3 - 9。
