Myoelectric Activity and Mandibular Movement for the Diagnosis of Temporomandibular Disorder

S

Stomatological Hospital Affiliated with Fujian Medical University

Status

Completed

Conditions

Temporomandibular Disorder

Treatments

Diagnostic Test: electromyograph and kinesiograph

Study type

Observational

Funder types

Other

Identifiers

NCT06372769
20240304

Details and patient eligibility

About

This study aimed to provide normal reference values of surface electromyography (sEMG) and mandibular kinematics in Chinese young adults, compare the sex differences and assess the diagnosis value of these indices.

Full description

Temporomandibular disorders (TMD) are one of the leading causes of craniofacial pain, and a high incidence of TMD in young adults has been reported. Previous studies have used sEMG and mandibular kinematic analysis to diagnose TMD. This was an observational study that healthy young adults with individual normal occlusion were strictly selected by diagnosis standard, and TMD patients with disc displacement were recruited. The sEMG signals of the anterior temporalis (TA), masseter (MM), and sternocleidomastoid and digastric were recorded in the mandibular postural positions (MPP) and during maximal voluntary clenching (MVC) with K7 electromyograph. Mandibular kinematics, including maximum opening and opening/closing velocities, were assessed by K7 kinesiograph.

Enrollment

120 patients

Sex

All

Ages

20 to 35 years old

Volunteers

Accepts Healthy Volunteers

Inclusion criteria

  • Centred midline and no marked restriction and deviation of mouth opening and closing; ·Overjet and overbite of 1-3 mm, bilateral molar support with molar and cusp relation of Angle's class I;
  • Presence of complete permanent dentition, except third molars.

Exclusion criteria

  • History of local or general trauma;
  • Presence of systemic diseases, neurological or psychiatric disorders, muscular diseases, cervical pain, or TMD based on the Research Diagnostic Criteria (RDC);
  • Pregnancy;
  • Consumption of anti-inflammatory, analgesic, antidepressant, or myorelaxant drugs;
  • Presence of parafunctional facets and anamnesis of parafunctional tooth clenching, bruxism, or unilateral chewing;
  • Presence of obvious dentition crowding or spacing, malposed, supernumerary or fractured tooth, visible caries, tooth abrasion/hypersensitivity, toothache, periodontal disease, or occlusal discomfort;
  • Fixed or removable restorations, tooth filling, or occlusal adjustment that affected the occlusal surfaces;
  • Previous or concurrent orthodontic, orthognathic, or TMJ treatment.

Trial design

120 participants in 2 patient groups

Healthy young adults with individual normal occlusion
Description:
Healthy subjects who fulfilled the following criteria: centred midline and no marked restriction and deviation of mouth opening and closing; overjet and overbite of 1-3 mm, bilateral molar support with molar and cusp relation of Angle's class I, and presence of complete permanent dentition, except third molars.
Treatment:
Diagnostic Test: electromyograph and kinesiograph
Temporomandibular disorder patients with disc displacement
Description:
Patients with unilateral or bilateral temporomandibular joint (TMJ) disc displacement symptoms, such as TMJ clicking, TMJ locking, and limitation in opening mouth were included in the study. The study did not cover the patients with muscle disorders (myofascial pain), with arthralgia, osteoarthritis, and osteoarthrosis, with TMJ fracture, with dentofacial deformity, with systemic disease affecting TMJ, and undergone TMD treatments.
Treatment:
Diagnostic Test: electromyograph and kinesiograph

Trial contacts and locations

1

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Data sourced from clinicaltrials.gov

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