TMD
Conditions
Keywords
masticatory muscles, surface electromyography, muscle activity
Brief summary
The aim of this study was to evaluate masticatory muscle electrical activity in patients with pain-related and pain-free temporomandibular disorders (TMD) as well as in subjects with no TMD. Ninety children with mixed dentition were recruited to the study. Of this total, 30 subjects were diagnosed with pain-related TMD, 30 with pain-free TMD, and 30 without TMD. We used Axis I of the Research Diagnostic Criteria for TMD (RDC/TMD) to assess the presence of TMD in the examined children. The electromyographical (EMG) potentials of the temporalis and masseter muscles were measured with a DAB-Bluetooth Instrument (Zebris Medical GmbH, Germany) at rest and during maximum voluntary clenching (MVC).
Interventions
DIAGNOSTIC_TESTelectromyography
Surface electromyography (sEMG) was used as an additional non-invasive tool for assessing patients with TMD.The electromyographical (EMG) potentials of the temporalis and masseter muscles were measured with a DAB-Bluetooth Instrument (Zebris Medical GmbH, Germany) at rest and during maximum voluntary clenching (MVC).
Sponsors
Pomeranian Medical University Szczecin
Study design
Observational model
CASE_CONTROL
Time perspective
RETROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
7 Years to 12 Years
Healthy volunteers
Yes
Inclusion criteria
* mixed dentition (the subjects should be aged between 7 and 12 years) * consent to participate voluntarily in the study
Exclusion criteria
* subjects who had undergone orthodontic or masticatory motor system dysfunction treatment, had systemic or rheumatologic diseases, a history of mouth breathing, surgery, traumas or malformations in the head and neck region
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Electromyographic analysis of the masticatory muscles in patients with pain-related temporomandibular disorders | For a single subject the whole EMG examination was taken 40 minutes. | A DAB-Bluetooth Instrument (Zebris Medical GmbH, Germany) was used to take electromyographical (EMG) recordings of the temporalis and masseter muscles at rest and during maximum voluntary contraction (MVC).Disposable, self-adhesive Ag/AgCl bipolar surface electrodes were placed at a fixed inter-electrode distance of 20 mm on the anterior temporal muscles and on the superficial masseter muscles parallel to the muscular fibres. The EMG signals were amplified, digitized and digitally filtered. The EMG results were analysed using the Student t-test, analysis of variance (ANOVA) and a Student-Newman-Keuls post-hoc test. |
Countries
Poland
Outcome results
None listed