Electromyographic research on parafunctional masseter muscle activity in suspected masticatory muscle dysfunction patients

Electromyographic research on parafunctional masseter muscle activity in suspected masticatory muscle dysfunction patients - Research on parafunctional masseter muscle EMG

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000027111

Enrollment

300

Registered

2017-05-16

Start date

2017-05-20

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

masticatory muscle dysfunction

Interventions

Record left masseter muscle EMG activity for 1 day long using ambulatory EMG recording system.

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Outpatients who are suspected to have masticatory muscle dysfunction. Practically, patients who show hypertonic activity of masticatory muscles, unstable mandibular position, occlusal dysesthesia, abnormal sensation in stomatognathic system, periodontitis, missing teeth, falling of restorations, denture soreness,or xerostomia.

Exclusion criteria

Exclusion criteria: 1) patient who has a history of skin trouble by the use of medical dressing tape 2) patients who can not follow the instructions for the use of EMG recording equipment

Design outcomes

Primary

Measure	Time frame
According to the classification of bruxism, tonic, phasic and mixed activities during parafunctional muscle activities will be evaluated.	—

Secondary

Measure	Time frame
Muscle activity patterns other than described above.	—

Countries

Japan

Contacts

Public ContactShogo Minagi

Okayama University Department of Occlusal and Oral Functional Rehabilitation

minagi@md.okayama-u.ac.jp086-235-6687

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026