Ginszt Michał, Zieliński Grzegorz
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.
J Clin Med. 2021 Apr 1;10(7):1440. doi: 10.3390/jcm10071440.
The aim of the present study was to analyze novel functional indices of masticatory muscle activity and compare them to existing and commonly used indices in patients with temporomandibular disorders (TMDs) and healthy adults. Based on the Research Diagnostic Criteria for Temporomandibular Disorders, 78 adult women qualified for the study. Subjects were divided into two groups: diagnosed TMDs ( = 36; mean age: 23.4 ± 2.6 years) and healthy adults ( = 42; mean age: 22.4 ± 2.3 years). Measurements of the bioelectric activity of the temporalis anterior (TA), superficial masseter (MM), and anterior bellies of the digastric muscle (DA) were carried out using the BioEMG III ™. Functional Clenching (FCI) and Functional Opening (FOI) indices were obtained as the ratio of the difference between the mean muscle root mean square (RMS) potentials during functional activity, including clenching (CL) and opening (MMO), and mean muscle resting (REST) potentials. Next, based on FCI and FOI indices, the Functional Clenching Activity Index (FCAI), Functional Clenching Symmetry Index (FCSI), and Functional Opening Symmetry Index (FOSI) were obtained. The statistical analysis showed significant differences in activity index left-sided (AcI) and Activity index both-sided (AcI) between TMDs and healthy women during rest measurements. The significant differences between both groups were noted in terms of all Functional Clenching Indices except Functional Clenching Index for MM right-sided (FCI). In all analyzed FCI indices, the control group showed higher values compared to the TMDs. Moreover, a significant difference between TMDs and controls was observed within Functional Clenching Activity Index left-sided (FCAI) (14.56 vs. -0.45, = 0.01). Both functional indices, and asymmetry (AsI) and activity (AcI) indices seem to be reliable in assessing symmetry and activity within masticatory muscles. Further studies should be performed to verify the effectiveness and suitability of the assessment of masticatory muscles using functional indices.
本研究的目的是分析咀嚼肌活动的新功能指标，并将其与颞下颌关节紊乱病（TMDs）患者和健康成年人中现有的常用指标进行比较。根据颞下颌关节紊乱病的研究诊断标准，78名成年女性符合研究条件。受试者分为两组：确诊为TMDs的患者（n = 36；平均年龄：23.4±2.6岁）和健康成年人（n = 42；平均年龄：22.4±2.3岁）。使用BioEMG III™对颞肌前束（TA）、咬肌浅层（MM）和二腹肌前腹（DA）的生物电活动进行测量。功能性紧咬（FCI）和功能性开口（FOI）指标通过功能性活动（包括紧咬（CL）和开口（MMO））期间平均肌均方根（RMS）电位与平均肌静息（REST）电位之间的差值之比获得。接下来，基于FCI和FOI指标，获得功能性紧咬活动指数（FCAI）、功能性紧咬对称指数（FCSI）和功能性开口对称指数（FOSI）。统计分析表明，在静息测量时，TMDs患者和健康女性之间的左侧活动指数（AcI）和双侧活动指数（AcI）存在显著差异。除右侧咬肌的功能性紧咬指数（FCI）外，两组在所有功能性紧咬指标方面均存在显著差异。在所有分析的FCI指标中，对照组的值均高于TMDs患者。此外，在左侧功能性紧咬活动指数（FCAI）方面，TMDs患者与对照组之间存在显著差异（14.56对-0.45，p = 0.01）。功能性指标以及不对称（AsI）和活动（AcI）指标在评估咀嚼肌的对称性和活动方面似乎都是可靠的。应进行进一步研究以验证使用功能性指标评估咀嚼肌的有效性和适用性。
