Effect of Low-level Laser Prior to the Induction of Fatigue

NCT ID: NCT02928809

Last Updated: 2016-12-06

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

NA

Total Enrollment

90 participants

Study Classification

INTERVENTIONAL

Study Start Date

2016-12-31

Study Completion Date

2016-12-31

Brief Summary

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The objective of this study is to perform an evaluation of the effect of LLLT on the prevention of fatigue in the masseter and anterior temporal muscles in young individuals with and without TMD.

Detailed Description

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Male and female individuals aged 18 to 23 years will be evaluated. The Research Diagnostic Criteria for Temporomandibular Disorders will be applied for the determination of the presence or absence of temporomandibular disorder. Each group (with and without temporomandibular disorder) will then be randomly allocated into a control group and experimental group submitted to pre-fatigue low-level laser therapy. Before and after the induction of fatigue, all volunteers will be evaluated with regard to the range of mandibular movement, bite force, sensitivity to palpation of the muscles evaluated and muscle fatigue. Low-level laser therapy will be administered to the masseter and anterior temporal muscles prior to the induction of fatigue, which will be induced with the use of chewing gum. The data will be submitted to descriptive statistical analysis. The chi-square test and Fisher's exact test will be used to establish the associations of the categorical variables. Pearson correlation coefficients will be calculated for the analysis of the correlation of the continuous variables.

Conditions

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Temporomandibular Joint Disorders

Keywords

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temporomandibular joint temporomandibular disorder muscle fatigue low-level laser therapy

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

FACTORIAL

Primary Study Purpose

PREVENTION

Blinding Strategy

SINGLE

Participants

Study Groups

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TMD control

Patients with diagnosis of temporomandibular disorder and that are not submitted to pre-fatigue low-level laser therapy

Group Type NO_INTERVENTION

No interventions assigned to this group

TMD LLL

Patients with diagnosis of temporomandibular disorder and that are submitted to pre-fatigue low-level laser therapy

Group Type EXPERIMENTAL

low-level laser therapy

Intervention Type DEVICE

Three points will be irradiated over the masseter muscle (upper, middle and lower bundles) and one point will be irradiated over the anterior temporal muscle of each side of the face in the groups submitted to pre-fatigue laser. The following parameters will be employed: wavelength: 780 nm; energy density: 25 J/cm2; output power: 50 mW; power density: 1.25 W/cm2; and exposure time: 20 seconds per points, resulting in a total energy of 1 J per point. The laser will be applied punctually with a conventional tip in contact with the skin considering an area of 0.04 cm2.

Without TMD control

Patients without diagnosis of temporomandibular disorder and that are not submitted to pre-fatigue low-level laser therapy

Group Type NO_INTERVENTION

No interventions assigned to this group

Without TMD LLL

Patients without diagnosis of temporomandibular disorder and that are submitted to pre-fatigue low-level laser therapy

Group Type EXPERIMENTAL

low-level laser therapy

Intervention Type DEVICE

Three points will be irradiated over the masseter muscle (upper, middle and lower bundles) and one point will be irradiated over the anterior temporal muscle of each side of the face in the groups submitted to pre-fatigue laser. The following parameters will be employed: wavelength: 780 nm; energy density: 25 J/cm2; output power: 50 mW; power density: 1.25 W/cm2; and exposure time: 20 seconds per points, resulting in a total energy of 1 J per point. The laser will be applied punctually with a conventional tip in contact with the skin considering an area of 0.04 cm2.

TMD placebo

Patients with diagnosis of temporomandibular disorder and that are submitted to placebo low-level laser treatment

Group Type PLACEBO_COMPARATOR

Placebo comparator

Intervention Type OTHER

The same equipment will be used in the placebo group, but with a pen that emits a red guide light and a warning sound, but without the emission of a laser beam.

Without TMD placebo

Patients without diagnosis of temporomandibular disorder and that are submitted to placebo low-level laser treatment

Group Type PLACEBO_COMPARATOR

Placebo comparator

Intervention Type OTHER

The same equipment will be used in the placebo group, but with a pen that emits a red guide light and a warning sound, but without the emission of a laser beam.

Interventions

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low-level laser therapy

Three points will be irradiated over the masseter muscle (upper, middle and lower bundles) and one point will be irradiated over the anterior temporal muscle of each side of the face in the groups submitted to pre-fatigue laser. The following parameters will be employed: wavelength: 780 nm; energy density: 25 J/cm2; output power: 50 mW; power density: 1.25 W/cm2; and exposure time: 20 seconds per points, resulting in a total energy of 1 J per point. The laser will be applied punctually with a conventional tip in contact with the skin considering an area of 0.04 cm2.

Intervention Type DEVICE

Placebo comparator

The same equipment will be used in the placebo group, but with a pen that emits a red guide light and a warning sound, but without the emission of a laser beam.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Male and female individuals aged 18 to 23 years with a signed statement of informed consent will be included in the study.

Exclusion Criteria

* Individuals in orthodontic or orthopedic treatment for the jaws, psychological treatment or physical therapy and those who make use of muscle relaxants, anti-inflammatory agents or bite plates will be excluded from the study.
Minimum Eligible Age

18 Years

Maximum Eligible Age

23 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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University of Nove de Julho

OTHER

Sponsor Role lead

Responsible Party

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Camila Haddad Leal de Godoy

Doctoral Student

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Camila HL Godoy, MS

Role: PRINCIPAL_INVESTIGATOR

University of Nove de Julho

Locations

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Universidade Nove de Julho

São Paulo, São Paulo, Brazil

Site Status RECRUITING

Countries

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Brazil

Central Contacts

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Camila HL Godoy, MS

Role: CONTACT

Phone: 55 11 3262-3166

Email: [email protected]

Sandra K Bussadori, PHD

Role: CONTACT

Email: [email protected]

Facility Contacts

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Camila HL Godoy, MS

Role: primary

Other Identifiers

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LLLMF

Identifier Type: -

Identifier Source: org_study_id