Muscular pattern in patients with temporomandibular joint disc displacement with reduction: an electromyographical assessment.

Autor: Di Giacomo, P., Ferrato, G., Serritella, E., Polimeni, A., Di Paolo, C.
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Zdroj: Clinica Terapeutica; 2020, Vol. 171 Issue 5, pe414-e420, 7p
Abstrakt: Objective. Surface Electromyography of masticatory muscles (sEMG) is used as a tool to support diagnosis and treatment of Temporomandibular disorders (TMDs). The study aimed at examining jaw muscles pattern in individuals with temporomandibular joint disc displacement with reduction (TMJ/DDR). This sort of subjects was supposed to have a different muscular pattern compared to the control group. Materials and methods. Sixty-four women with unilateral TMJ/DDR and forty TMD-free women underwent a sEMG assessment of masticatory muscles. Descriptive statistics were performed. Student T-Test assessed differences between the two groups. Statistical significance was set at ρ < 0.05. Results. The t-test showed statistically significant results only in BAR and SMI scores (ρ value < 0,0001). The other measurements did not differ between the two groups. BAR index values of all healthy subjects were within the reference range. Almost the entire TMJ/DDR group had BAR index out of reference range and anteriorly placed. Conclusions. Women with TMJ/DDR showed an altered recruitment of the jaw muscles, with significant difference between the activity of the couple of temporalis and the one of masseters, compared to the control group. A lower chewing efficiency was found in the DDR group compared to the control one. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index