Low-level Laser Therapy on Temporomandibular Disorder

2014-08-27 04:00:42 | BioPortfolio


The purpose of this study is to assess the effect of low-level laser on pain, occlusal contacts, mandibular movements and electromyography activity in the masseter and temporal muscles in adolescents with TMD.


A randomized, controlled, double-blind, clinical trial will be carried out. Adolescents aged 15 to 18 years will answer the questionnaire of the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD)and a specific clinical exam of RDC/TMD will also be carried out for the diagnosis of temporomandibular disorder (TMD), prior to any intervention. They will also be submitted to electromyographic analysis of the masseter muscles and anterior bundle of the temporal muscles bilaterally for the determination of TMD.

The type of occlusion of those participants will be determined by the clinical examination based on the Angle classification and the occlusal contact points will be recorded using T-Scan III.

Before the intervention, the mandibular range of motion will be assessed by the register of maximum voluntary mouth opening, maximum passive mouth opening and excursion as well as the record pain upon palpation of the masseter and temporal muscles using a visual analog scale.

The volunteers diagnosed with TMD will be divided into four groups and two sessions of LLLT or placebo treatment will be carried out over six weeks. One group will receive low-level laser (LLL) treatment on temporomandibular joint(TMJ) region, one will receive LLL treatment at masseter and temporal muscles, one will receive mixed application of LLL (muscles and TMJ) and the other group will receive placebo treatment.

After the last session of LLL treatment the electromyographic analysis, the record of occlusal contact points, mandibular range of motion and pain upon palpation will be carried out. 30 days following the last session the occlusal contact points, mandibular range of motion and pain upon palpation will be recorded.

Individuals with dentofacial anomalies, incomplete permanent dentition to the 2nd molar, currently undergoing orthodontic or orthopedic treatment of the jaws, currently undergoing psychological treatment or physical therapy and making use of a muscle relaxant, anti-inflammatory agent or bite plate will be excluded from the study.

The data will be submitted to descriptive statistical analysis. The chi-square test and Fisher's exact test will be used for the determination of associations among the categorical variables. The Student's t-test and analysis of variance will be used for the comparison of mean electromyographic signals. Pearson's correlation coefficients will be calculated for the analysis of correlations among the continuous variables.

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Outcomes Assessor), Primary Purpose: Treatment


Temporomandibular Disorder


low-level laser treatment


Universidade Nove de Julho - Vergueiro
Sao Paulo




University of Nove de Julho

Results (where available)

View Results


Published on BioPortfolio: 2014-08-27T04:00:42-0400

Clinical Trials [1688 Associated Clinical Trials listed on BioPortfolio]

Low Level Laser Therapy in the Treatment of Temporomandibular Joint Disorders (TMJDs) Related Pain

The Low Level Laser Therapy (LLLT) has been recently introduced with success in the management of the pain associated to this condition. This double blind placebo controlled clinical trial...

Effect of Conventional Therapy and Low Level Laser Therapy on Pain and Function in Patients With Temporomandibular Joint Dysfunction

This study to determine the effect of conventional therapy and low level laser therapy on pain and function in patients with temporomandibular joint dysfunction. sixty patients with myofas...

Evaluation of C-reactive Protein Level in the Group of Patient With Pain Form of Temporomandibular Joint Dysfunction

Temporomandibular joints dysfunction is a functional disorder concern with the abnormal functioning of the muscles of the stomatognathic system, temporomandibular joints involved in the dy...

Effects of Laser Therapy and LED Therapy on Elderly Individuals With Temporomandibular Disorder

Temporomandibular disorder (TMD) is described as a subgroup of orofacial pain with a set of signs and symptoms that involve the temporomandibular joint, masticatory muscles, ears and neck....

Osteopathic Manipulative Treatment in Individuals With Temporomandibular Disorder Who Make Use of Occlusal Splints

This study aim to contribute with the investigation of the therapeutic effect of osteopathic manipulative tratament in pain intensity and Quality of Life in individuas diagnosed with tempo...

PubMed Articles [26888 Associated PubMed Articles listed on BioPortfolio]

Acupuncture in Temporomandibular Disorder Myofascial Pain Treatment: A Systematic Review.

To carry out a systematic review of clinical trials published up to 2015 to determine the effectiveness of acupuncture in treating myofascial pain in temporomandibular disorder (TMD) patients.

Hereditary hemorrhagic telangiectasia-laser treatment of epistaxis.

Hereditary hemorrhagic telangiectasia (HHT) is a rare, autosomal dominant disorder characterized by recurrent epistaxis, telangiectasias, and multiorgan vascular dysplasia. Various modalities exist fo...

Application of Bidirectional Distraction Osteogenesis for the Treatment of Mandibular Micriognathia Caused by Temporomandibular Joint Ankylosis.

Temporomandibular joint (TMJ) ankylosis is a joint disorder that refers to bone or fibrous adhesion of the anatomic joint components and the ensuing loss of function. When it happens on children, it i...

Evaluation of different treatment protocols for dentin hypersensitivity: an 18-month randomized clinical trial.

This randomized and longitudinal in vivo study aimed to assess different protocols for the treatment of dentin hypersensitivity with low-power laser (with different doses), high-power laser, and a des...

Low-level laser therapy for treatment of neurosensory disorders after orthognathic surgery: A systematic review of randomized clinical trials.

Low-level laser has been widely used in Dentistry and many studies have focused on its application in oral surgeries. This study was conducted with the aim of searching for scientific evidence concern...

Medical and Biotech [MESH] Definitions

Treatment using irradiation with LASER light of low power intensity so that the effects are not due to heat, as in LASER THERAPY. These non-thermal effects are thought to be mediated by a photochemical reaction that alters CELL MEMBRANE PERMEABILITY, leading to increased mRNA synthesis and CELL PROLIFERATION. Low-level laser therapy has been used for a wide variety of conditions, but most frequently for wound healing and pain control.

A technique utilizing a laser coupled to a catheter which is used in the dilatation of occluded blood vessels. This includes laser thermal angioplasty where the laser energy heats up a metal tip, and direct laser angioplasty where the laser energy directly ablates the occlusion. One form of the latter approach uses an EXCIMER LASER which creates microscopically precise cuts without thermal injury. When laser angioplasty is performed in combination with balloon angioplasty it is called laser-assisted balloon angioplasty (ANGIOPLASTY, BALLOON, LASER-ASSISTED).

A variety of conditions affecting the anatomic and functional characteristics of the temporomandibular joint. Factors contributing to the complexity of temporomandibular diseases are its relation to dentition and mastication and the symptomatic effects in other areas which account for referred pain to the joint and the difficulties in applying traditional diagnostic procedures to temporomandibular joint pathology where tissue is rarely obtained and x-rays are often inadequate or nonspecific. Common diseases are developmental abnormalities, trauma, subluxation, luxation, arthritis, and neoplasia. (From Thoma's Oral Pathology, 6th ed, pp577-600)

Techniques using laser energy in combination with a balloon catheter to perform angioplasty. These procedures can take several forms including: 1, laser fiber delivering the energy while the inflated balloon centers the fiber and occludes the blood flow; 2, balloon angioplasty immediately following laser angioplasty; or 3, laser energy transmitted through angioplasty balloons that contain an internal fiber.

The coagulation of tissue by an intense beam of light, including laser (LASER COAGULATION). In the eye it is used in the treatment of retinal detachments, retinal holes, aneurysms, hemorrhages, and malignant and benign neoplasms. (Dictionary of Visual Science, 3d ed)

More From BioPortfolio on "Low-level Laser Therapy on Temporomandibular Disorder"

Quick Search

Relevant Topics

Pain is defined by the International Association for the Study of Pain as “an unpleasant sensory and emotional experience associated with actual or potential tissue damage or described in terms of such damage”. Some illnesses can be excruci...

Clincial Trials
In a clinical trial or interventional study, participants receive specific interventions according to the research plan or protocol created by the investigators. These interventions may be medical products, such as drugs or devices; procedures; or change...

An anesthesiologist (US English) or anaesthetist (British English) is a physician trained in anesthesia and perioperative medicine. Anesthesiologists are physicians who provide medical care to patients in a wide variety of (usually acute) situations. ...

Searches Linking to this Trial