Therapeutic Response of Ultrasound and Muscular Stretching in Temporomandibular Disorder Patients

Universidade Federal de Santa Maria

Status: Completed

Conditions: Temporomandibular Joint Disorders

Treatments: Other: Placebo; Other: Ultrasound; Other: Ultrasound associated with stretching

Study type: Interventional

Funder types: Other

Identifiers

NCT02139735

UFSM-MO-01

Details and patient eligibility

About

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

Full 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.

Enrollment: 18 patients

Sex: Female

Ages: 20 to 35 years old

Volunteers: No 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.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Crossover Assignment

Masking: Single Blind

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18 participants in 3 patient groups

Ultrasound

Experimental group

Description:

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

Treatment:

Other: Placebo

Other: Ultrasound associated with stretching

Ultrasound associated with stretchting

Experimental group

Description:

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

Treatment:

Other: Ultrasound

Other: Placebo

Placebo

Experimental group

Description:

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

Treatment:

Other: Ultrasound

Other: Ultrasound associated with stretching