Effects of Low-Level Laser Therapy on Mouth Opening and Surface Electromyography in Temporomandibular Disorders

Temporomandibular Joint Dysfunction Syndrome Clinical Trial

Official title:

Effects of Low-Level Laser Therapy Versus Soft Occlusive Splints on Mouth Opening and Surface Electromyography in Temporomandibular Disorders

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT04831346
• Other study ID #: CairoU2020
• Status: Recruiting
• Phase: N/A
• Start date: November 1, 2020
• Est. completion date: December 1, 2022

Study information

• Verified date: April 2021
• Source: Cairo University
• Contact: Tamer Shousha, Lecturer
• Phone: 002-01227900667
• Email: shoushadoc[@]yahoo.com
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

This is a one year followup study that aims to assess the efficacy of low level laser therapy (LLLT) on pain, mouth opening and masticatory muscle activity in cases of temporomandibular dysfunction (TMD) as compared to soft occlusive splints.

Description:

A prospective, parallel randomized, controlled study will be conducted at the outpatient university clinic. Participant recruitment started following approval from the Ethics Committee .The patients will participate in the study after signing an informed consent form prior to data collection. Per inclusion criteria, subjects included are females less than 30 years of age, diagnosed with unilateral arthrogenous TMD, having complete permanent dentition and showing normal occlusion. Prior to participating in any study-related procedures, participants read and signed the informed consent form approved by the Institutional Review Board. Participants will be divided into three groups; three groups: LLLT (Group A); soft occlusive splint therapy OST (Group B); waitlist as controls (Group C).

Outcome measures: TMJ opening index (TOI), VAS, sEMG. Participants were not given information on which treatment they were receiving; they were only told that they could receive one of two different treatment techniques. Sessions were scheduled 3 days a week (every other day) for a total of 10 sessions

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 100
• Est. completion date: December 1, 2022
• Est. primary completion date: November 1, 2021
• Accepts healthy volunteers: No
• Gender: Female
• Age group: 18 Years to 30 Years

Eligibility

Inclusion Criteria:

Females less than 30 years of age, Diagnosed with unilateral myogenous TMD, Having complete permanent dentition Showing normal occlusion

Exclusion Criteria:

Prior experience of Laser therapy, Systemic diseases (rheumatoid arthritis, ankylosing spondylitis, diabetes… etc. History of trauma in the TMJ or cervical regions; Neurological disorders, Muscular diseases; Cervical pain; Bruxism, Pregnancy; Currently on medication (analgesic, anti-inflammatory, muscle relaxants or anti- depressants) Current use of dental prosthetics; Previous orthodontal treatments; or Fixed restorations affecting occlusal surfaces.

Related Conditions & MeSH terms

• Facial Pain
• Joint Diseases
• Pain, Face
• Temporomandibular Joint Disorders
• Temporomandibular Joint Dysfunction Syndrome

Intervention

Other:
• Low level laser
940 nm wavelength with 0.2 W output power and 2 J energy applied for 10 seconds with an energy density of 2.5 J/cm2.

Device:
• Soft occlusive splint
A vacuum-formed soft occlusal splint made from a 2-mm-thick elastic rubber sheets. Participants are instructed to always wear the splint except during mealtimes and oral hygiene.

Locations

Country	Name	City	State
Egypt	Faculty of Physical Therapy	Giza

Sponsors (1)

Lead Sponsor	Collaborator
Cairo University

Country where clinical trial is conducted

Egypt, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Change in the Temporomandibular joint opening index (TOI):	Active and passive mouth opening will be assessed by a Boley gauge (Electronic Digital Caliper, CE Company, Japan); TOI= Passive opening mm -Maximum voluntary opening mm X 100 Passive opening mm +Maximum voluntary opening mm	baseline (pre-treatment) / after 3 weeks / and after 1 year
Secondary	change in surface EMG (sEMG):	For recording, a surface electromyograph (Myotronics-Noromed, Inc., Tukwila WA, USA), with 8-channels, simultaneous acquisition, common grounding to all channels, and filters of 50 Hz electromyography with disposable electrodes will be used.; Subjects will be seated on chairs with back and head rests to allow assessment from a relaxed position.; The right masseter (RM), left masseter (LM), right anterior temporal (RAT), left anterior temporal (LAT), right sternocleidomastoid (RSM), and left sternocleidomastoid (LSM) muscles were recorded. The sEMG recordings and muscle activity will be expressed as the root mean square (rms) of the amplitude, expressed in µV.	baseline (pre-treatment) / after 3 weeks / and after 1 year
Secondary	Change in Visual Analogue Scale (VAS)	The pain VAS is a reliable measure of pain intensity with a 10 centimeters (100 mm) continuous scale attached by 2 verbal descriptors, one for each symptom extreme.; For pain intensity, the scale is most anchored by "no pain" (score of 0) and "pain as bad as it could be" or "worst imaginable pain" (score of 100).; The VAS only requires the ability to use a ruler to measure the distance to determine a score.	baseline (pre-treatment) / after 3 weeks / and after 1 year