Rosati Riccardo, Val Matteo, Manfredini Daniele, Carmagnola Daniela, Fortunati Claudia, Guarda-Nardini Luca, Dellavia Claudia
Department of Biomedical Surgical and Dental Sciences, Università degli Studi di Milano, Milan, Italy.
Unit of Oral and Maxillofacial Surgery, Ca' Foncello Hospital, ASL 2 Marca Trevigiana, Treviso, Italy.
Oral Dis. 2024 Nov;30(8):5349-5359. doi: 10.1111/odi.15011. Epub 2024 May 28.
To compare masticatory muscles' recruitment in patients with temporomandibular disorders and asymptomatic control subjects. To evaluate if the masticatory muscles' recruitment pattern may predict symptoms' improvement after temporomandibular disorders treatment.
Standardized surface electromyography of anterior temporalis and superficial masseters muscles were recorded and compared at baseline in 26 patients with arthrogenous temporomandibular disorders (study group) and 26 asymptomatic subjects (control group). The study group was treated pharmacologically and by means of five arthrocentesis sessions. Pre-, during-, and post-treatment pain and mandibular function were assessed and compared among timepoints. Clinical improvement in terms of pain and mandibular function was correlated with pre-treatment standardized surface electromyography values.
Temporomandibular disorders patients showed improved maximum mouth opening and pain during and after treatment with arthrocentesis compared to baseline (T-test p < 0.01). Standardized surface electromyography values were significantly different in temporomandibular disorders subjects compared to controls (T-test p < 0.05). Improvement in pain at rest after treatment was inversely correlated with pre-treatment masseters standardized surface electromyography symmetry (R-coefficient 0.3936; p < 0.05).
Temporomandibular disorders patients showed a different muscular recruitment pattern compared to controls. The lesser the pre-treatment masseters symmetry, the greater the improvement of pain at rest after treatment.
比较颞下颌关节紊乱病患者与无症状对照者咀嚼肌的募集情况。评估咀嚼肌的募集模式是否可预测颞下颌关节紊乱病治疗后症状的改善情况。
对26例关节源性颞下颌关节紊乱病患者（研究组）和26例无症状受试者（对照组）在基线时进行颞肌前束和咬肌浅层的标准化表面肌电图记录并比较。研究组接受药物治疗及五次关节腔穿刺治疗。在治疗前、治疗期间和治疗后评估并比较疼痛和下颌功能。疼痛和下颌功能方面的临床改善与治疗前标准化表面肌电图值相关。
与基线相比，颞下颌关节紊乱病患者在关节腔穿刺治疗期间及治疗后最大开口度和疼痛有所改善（T检验p<0.01）。与对照组相比，颞下颌关节紊乱病受试者的标准化表面肌电图值有显著差异（T检验p<0.05）。治疗后静息痛的改善与治疗前咬肌标准化表面肌电图对称性呈负相关（R系数0.3936；p<0.05）。
与对照组相比，颞下颌关节紊乱病患者表现出不同的肌肉募集模式。治疗前咬肌对称性越低，治疗后静息痛的改善越大。
