NCT06495788

Effect of High-intensity Laser Therapy on Patients With Myogenic Temporomandibular Joint Dysfunction

Effect of High-intensity Laser Therapy on Temporalis and Masseter Muscles Activity in Patients With Myogenic Temporomandibular Joint Dysfunction

• Status: Not Yet Recruiting
• Phase: N/A
• Study type: Interventional
• Enrollment: 40 (estimated)
• Sponsor: Cairo University · Academic / Other
• Sex: All
• Age: 20 Years – 45 Years
• Healthy volunteers: Accepted

Summary

This study will be conducted to investigate the effect of high-intensity laser therapy on the temporalis and masseter muscles activity in patients with myogenic temporomandibular joint dysfunction.

Detailed description

Temporomandibular joint dysfunction (TMD) is one of the problems that affect the quality of lifestyle through the presence of pain around the joint radiated in the face, neck, or shoulders muscles and a decrease in function of the temporomandibular joint that leads to difficulty in mastication, swallowing, earaches, dizziness, and hearing problems may sometimes be associated with TMD. High-intensity laser therapy (HILT) is a laser with a wavelength of 1064 nm and has recently been used in the treatment of musculoskeletal diseases. Its primary effect is the analgesic effect and reactive vasodilation by affecting the cutaneous nerve endings. Another mechanism of action is based on tissue stimulation. This stimulation occurs at the level of cells, vascular tissue, interstitial tissue, and the immune system. It increases regeneration and beta-endorphin release by inducing protein synthesis in synovial fluid, thus exerting analgesic and anti-inflammatory effects. Since there is a lack of literature studying the effect of HILT on masseter and temporalis muscles activity in patients with myogenic TMD so, this study may provide a baseline for a new technique in rehabilitation intervention in patients with myogenic TMD.

Conditions

• Temporomandibular Joint Dysfunction Syndrome

Interventions

Type	Name	Description
DEVICE	High-intensity laser therapy (HILT)	* Pulsed high-intensity laser therapy (HILT) will be applied 3 sessions per week for 8 weeks with pulsed emission (1064 nm), very high peak power (3 kW), a short duration (120-150 ms), and low frequency (10-40 Hz).The probe is fixed vertically at 90° to the most painful points while the patients sit on a chair and wear safety eyewear. * Conventional treatment ( 3 days per week for 8 weeks).: in the form of * Hot pad: It will be used over the temporomandibular joint (TMJ) for 5 minutes at the beginning of each session. * Ultrasound therapy (US): it will be applied over the TMJ with pulsed intensity of 1.0 W/cm2 at a 1MHz frequency for 5 min/session. * TENS: one electrode is placed over the TMJ and the other just above the mandibular angle. it will be applied with a low frequency of 50 HZ, tolerable intensity for 15 minutes. * Exercise therapy: anterior, medial and lateral glide of the mandible. Each glide will be done 10-15 repetitions, 5-6 times in a session, 10 minutes as a total.
DEVICE	placebo high-intensity laser therapy	The same treatment procedure will be applied in the placebo group as in the experimental group, but the laser device is turned off during applications, in addition to the conventional treatment in the form of hot pad, US, TENS, and exercise therapy.

Timeline

• Start date: 2024-07-12
• Primary completion: 2024-11-20
• Completion: 2024-12-20
• First posted: 2024-07-11
• Last updated: 2024-07-11