Assessments of Muscle Thickness and Tonicity of the Masseter and Sternocleidomastoid Muscles and Maximum Mouth Opening in Patients with Temporomandibular Disorder
| Autor: | Seung-Chul Chon, Keun-hyo Lee |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
medicine.medical_specialty
Leadership and Management Health Informatics temporomandibular disorder sternocleidomastoid muscle Article Masseter muscle Muscle tone Health Information Management Internal medicine medicine In patient masseter muscle muscle thickness maximum mouth opening business.industry Health Policy Temporomandibular disorder fungi Mouth opening stomatognathic diseases medicine.anatomical_structure muscle tone Ultrasound imaging Cardiology Tonicity Medicine Sternocleidomastoid muscle business |
| Zdroj: | Healthcare; Volume 9; Issue 12; Pages: 1640 Healthcare Healthcare, Vol 9, Iss 1640, p 1640 (2021) |
| ISSN: | 2227-9032 |
| DOI: | 10.3390/healthcare9121640 |
| Popis: | The purpose of this study was to compare the muscle thickness and tone of the masseter and sternocleidomastoid (SCM) muscles and maximum mouth opening (MMO) in subjects with and without temporomandibular disorders (TMD), and perform a correlation comparison on the results of the TMD group. Sixty patients were allocated to the TMD group (n = 30) or the non-TMD group (n = 30). Ultrasound imaging, myotonometer, and vernier calipers were used to determine the related changes in muscle thickness and muscle tone in masseter and SCM, and MMO, respectively. The TMD group revealed a significant decrease than the non-TMD group in the muscle thickness of masseter and SCM, respectively (p < 0.001), with a significant increase in frequency (p < 0.001) and stiffness (p < 0.001) in the masseter muscle tone, with a significant increase in frequency (p < 0.001) and stiffness (p = 0.005) in the SCM muscle tone, a significant decrease in the MMO (p < 0.001). There was a moderate negative correlation between the relaxed state of masseter muscle thickness and stiffness of SCM muscle tone (r = −0.40, p = 0.002), and a moderate negative correlation between the relaxed state of SCM muscle thickness and frequency of SCM muscle tone (r = −0.42, p = 0.001). There was a moderate negative correlation between the clenching state of SCM muscle thickness and the frequency of SCM muscle tone (r = −0.47, p < 0.001). In addition, a moderate negative correlation between MMO and frequency of SCM muscle tone (r = −0.44, p < 0.001). The muscle thickness was decreased, and the muscle tone was increased in the masseter and SCM muscle, respectively. Additionally, MMO was decreased in patients with TMD compared with non-TMD. |
| Databáze: | OpenAIRE |
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