Does masticatory muscle hyperactivity occur in individuals presenting temporomandibular disorders?
Aim: To verify whether patients with temporomandibular disorders (TMD) present masticatory muscle hyperactivity with the mandible in the rest position. Method: Forty-six women were selected (18-33 years-old, mean age = 22.7 ± 3.52 years), 31 with TMD (experimental group) and 15 without TMD (control...
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| Format: | Article |
| Language: | English |
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Universidade Estadual de Campinas
2016-09-01
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| Series: | Brazilian Journal of Oral Sciences |
| Subjects: | |
| Online Access: | https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8643020 |
| _version_ | 1818623561961570304 |
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| author | Delaine Rodrigues-Bigaton Rosemary Berto Anamaria Siriani Oliveira Fausto Bérzin |
| author_facet | Delaine Rodrigues-Bigaton Rosemary Berto Anamaria Siriani Oliveira Fausto Bérzin |
| author_sort | Delaine Rodrigues-Bigaton |
| collection | DOAJ |
| description | Aim: To verify whether patients with temporomandibular disorders (TMD) present masticatory muscle hyperactivity with the mandible in the rest position. Method: Forty-six women were selected (18-33 years-old, mean age = 22.7 ± 3.52 years), 31 with TMD (experimental group) and 15 without TMD (control group). Electromyography (EMG) was performed in two situations: 1) with the mandible in the rest position and 2) in maximal dental clenching. RMS (root mean square) was used for EMG signal analysis. Data were analyzed statistically by the Mann Whitney U-test. Result: The experimental groups presented increased EMG activity of the muscles evaluated with the mandible in the rest position compared to the control. In maximal dental clenching, no differences were observed between the groups. Analyzing the percentage of EMG activity at rest, the control group presented EMG activity around 1 to 6% of maximal dental clenching and the experimental group, around 1 to 12% of the same activity. Conclusion: The experimental group presented an increase in EMG activity at rest in the studied muscles, mainly in the anterior portion of the temporal muscle, bilaterally. However, this increase should not be called muscular hyperactivity, but should rather be considered as an important sign of TMD. |
| first_indexed | 2024-12-16T18:43:02Z |
| format | Article |
| id | doaj.art-9469d8d11ac74f8d82fd4cd8770fbdf6 |
| institution | Directory Open Access Journal |
| issn | 1677-3225 |
| language | English |
| last_indexed | 2024-12-16T18:43:02Z |
| publishDate | 2016-09-01 |
| publisher | Universidade Estadual de Campinas |
| record_format | Article |
| series | Brazilian Journal of Oral Sciences |
| spelling | doaj.art-9469d8d11ac74f8d82fd4cd8770fbdf62022-12-21T22:20:58ZengUniversidade Estadual de CampinasBrazilian Journal of Oral Sciences1677-32252016-09-0172410.20396/bjos.v7i24.8643020Does masticatory muscle hyperactivity occur in individuals presenting temporomandibular disorders?Delaine Rodrigues-Bigaton0Rosemary Berto1Anamaria Siriani Oliveira2Fausto Bérzin3University of PiracicabaUniversity of PiracicabaUniversity of São PauloState University of CampinasAim: To verify whether patients with temporomandibular disorders (TMD) present masticatory muscle hyperactivity with the mandible in the rest position. Method: Forty-six women were selected (18-33 years-old, mean age = 22.7 ± 3.52 years), 31 with TMD (experimental group) and 15 without TMD (control group). Electromyography (EMG) was performed in two situations: 1) with the mandible in the rest position and 2) in maximal dental clenching. RMS (root mean square) was used for EMG signal analysis. Data were analyzed statistically by the Mann Whitney U-test. Result: The experimental groups presented increased EMG activity of the muscles evaluated with the mandible in the rest position compared to the control. In maximal dental clenching, no differences were observed between the groups. Analyzing the percentage of EMG activity at rest, the control group presented EMG activity around 1 to 6% of maximal dental clenching and the experimental group, around 1 to 12% of the same activity. Conclusion: The experimental group presented an increase in EMG activity at rest in the studied muscles, mainly in the anterior portion of the temporal muscle, bilaterally. However, this increase should not be called muscular hyperactivity, but should rather be considered as an important sign of TMD.https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8643020Temporomandibular joint dysfunction syndrome. Electromyography. Masticatory muscles |
| spellingShingle | Delaine Rodrigues-Bigaton Rosemary Berto Anamaria Siriani Oliveira Fausto Bérzin Does masticatory muscle hyperactivity occur in individuals presenting temporomandibular disorders? Brazilian Journal of Oral Sciences Temporomandibular joint dysfunction syndrome. Electromyography. Masticatory muscles |
| title | Does masticatory muscle hyperactivity occur in individuals presenting temporomandibular disorders? |
| title_full | Does masticatory muscle hyperactivity occur in individuals presenting temporomandibular disorders? |
| title_fullStr | Does masticatory muscle hyperactivity occur in individuals presenting temporomandibular disorders? |
| title_full_unstemmed | Does masticatory muscle hyperactivity occur in individuals presenting temporomandibular disorders? |
| title_short | Does masticatory muscle hyperactivity occur in individuals presenting temporomandibular disorders? |
| title_sort | does masticatory muscle hyperactivity occur in individuals presenting temporomandibular disorders |
| topic | Temporomandibular joint dysfunction syndrome. Electromyography. Masticatory muscles |
| url | https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8643020 |
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