Therapeutic Response of Ultrasound and Muscular Stretching in Temporomandibular Disorder Patients

Therapeutic Response of Ultrasound and Muscular Stretching in Temporomandibular Disorder Patients: Clinical Trial

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT02139735

Enrollment

Registered

2014-05-15

Start date

2012-03-31

Completion date

2014-03-31

Last updated

2014-05-15

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

Conditions

Temporomandibular Joint Disorders

Keywords

Temporomandibular Joint Disorders,, Ultrasonics,, Electromyography,, Pain Measurement,, Muscle Stretching Exercise

Brief summary

The combination of ultrasound and muscular stretching may have positive effects on pain relief and on the balance of the masticatory muscles activity.

Detailed description

This study aimed to evaluate the therapeutic response of ultrasound (US) and ultrasound associated with stretching of the masticatory muscles on the pressure pain threshold and the electrical activity of masseter and anterior temporal muscles in Temporomandibular Disorder (TMD) patients . The study included 18 women with TMD diagnosed by the instrument Research Diagnostic Criteria for Temporomandibular Disorders (RDC / TMD). The pressure pain threshold, evaluated through algometry, and the electrical activity of the masticatory muscles were evaluated, by means of surface electromyography, before and immediately after the therapeutic procedures. The volunteers underwent three different interventions: ultrasound, ultrasound associated with stretching and ultrasound placebo, with a 1-week of minimum interval between them.

Interventions

OTHERUltrasound

3 MHz ultrasound in continuous mode with an intensity of 1.0 W / cm ² was applied for 3 minutes in the TMJ and masseter muscles bilaterally

OTHERUltrasound associated with stretching

3 MHz ultrasound in continuous mode with an intensity of 1.0 W / cm ² was applied for 3 minutes in the TMJ and masseter muscles, bilaterally. Active stretching of the masseter muscles with mouth opening and closed lips

OTHERPlacebo

Turned off ultrasound application on area of TMJ and masseter muscle, bilaterally.

Study design

Allocation

RANDOMIZED

Intervention model

CROSSOVER

Primary purpose

TREATMENT

Masking

SINGLE (Investigator)

Eligibility

Sex/Gender

FEMALE

Age

20 Years to 35 Years

Healthy volunteers

Inclusion criteria

* diagnosis of myogenic or mixed TMD according to the Research Diagnostic Criteria for Temporomandibular Disorders (RDC / TMD) * women aged 20 to 35 years.

Exclusion criteria

* psychomotor impairment ; * history of orthopedic trauma involving the temporomandibular region , orofacial surgery or poor training ; * analgesics , anti-inflammatories , muscle relaxants , antidepressants ; * presence of acute TMJ pain ( last 3 months) ; * have perform physical therapy or speech therapy for the past 6 months; * periods of the end of the menstrual cycle (7 days prior to menstruation ) and onset of menstruation ( first 2 days ) were excluded for conducting evaluations of volunteers who did not use oral contraception and those who used it to break.

Design outcomes

Primary

Measure	Time frame	Description
pressure pain threshold	10 minutes	algometry

Secondary

Measure	Time frame	Description
surface electromyography	10 minutes	electromyographic activity was measure at rest, in maximal intercuspal position and maximal voluntary clench

Countries

Brazil

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026