Department of Rehabilitation and Physiotherapy, Medical University of Lublin, 20-093 Lublin, Poland.
Department of Sports Medicine, Medical University of Lublin, 20-093 Lublin, Poland.
Int J Environ Res Public Health. 2022 Nov 23;19(23):15559. doi: 10.3390/ijerph192315559.
Wearing a medical mask influences resting activity of the temporalis anterior and masseter muscles in healthy young women. However, no studies link medical mask-wearing with masticatory muscle activity in patients with temporomandibular disorders (TMDs). Therefore, this study aims to compare electromyographic patterns while wearing a medical mask between women with and without temporomandibular disorders. Based on the Research Diagnostic Criteria for Temporomandibular Disorders, 115 adult women qualified for the study. Participants were divided into the following two groups: diagnosed TMDs ( = 55; mean age: 23.5 ± 2.3 years) and healthy women ( = 60; mean age: 23.7 ± 2.6 years). Examinations of the resting and functional electromyographic activity of the temporalis anterior (TA), superficial masseter (MM), anterior bellies of the digastric muscle (DA), and the middle part of the sternocleidomastoid muscle (SCM) were carried out using the BioEMG III™. Both groups showed statistically significant decreases in resting masticatory muscle activity during medical mask examination compared to no mask measurement. The significant differences in no mask measurement between both groups were noted regarding resting masticatory activity, clenching in the intercuspal position, and clenching on dental cotton rollers. During medical mask examination, women with TMDs showed differences in resting masticatory activity and clenching on dental cotton rollers compared to the healthy group. In all analyzed variables, both groups showed similar electromyographic patterns in the maximum mouth opening measurement during medical mask and no mask examination. A medical mask influences the resting bioelectric activity of the masticatory muscles in women with temporomandibular disorders and healthy women. We observed differences and some similarities in resting and functional electromyographic patterns within masticatory and neck muscles in both groups during medical mask and no mask examination.
佩戴医用口罩会影响健康年轻女性的颞肌前肌和咬肌的休息活动。然而，目前尚无研究将戴医用口罩与颞下颌关节紊乱症（TMD）患者的咀嚼肌活动联系起来。因此，本研究旨在比较 TMD 患者和无 TMD 患者佩戴医用口罩时的肌电图模式。根据颞下颌关节紊乱症的研究诊断标准，共有 115 名成年女性符合研究条件。参与者分为以下两组：诊断为 TMD（n=55；平均年龄：23.5±2.3 岁）和健康女性（n=60；平均年龄：23.7±2.6 岁）。使用 BioEMG III™对颞肌前（TA）、浅层咬肌（MM）、二腹肌前腹（DA）和胸锁乳突肌中段（SCM）的休息和功能肌电图活动进行检查。与不戴口罩测量相比，两组在医用口罩检查时休息时的咀嚼肌活动均显示出统计学上的显著降低。在不戴口罩测量时，两组之间在休息时的咀嚼活动、牙间紧咬和咬牙棉卷紧咬方面存在显著差异。在医用口罩检查中，与健康组相比，TMD 女性在休息时的咀嚼活动和咬牙棉卷紧咬方面存在差异。在所有分析的变量中，两组在医用口罩和不戴口罩检查的最大开口测量中均显示出相似的肌电图模式。医用口罩会影响 TMD 女性和健康女性咀嚼肌的休息生物电活动。我们观察到两组在医用口罩和不戴口罩检查期间，咀嚼肌和颈部肌肉的休息和功能肌电图模式存在差异和一些相似之处。
