Photobiomodulation in Oral Lichen Planus

Summary

The aim of this study was to compare the efficacy of PBM (660nm) and corticosteroid therapy with clobetasol propionate 0.05% in the treatment of OLP. This is a protocol for a randomized, controlled, double blind clinical trial. Fourty-four patients will be randomized in two experimental groups. Control group will be treated with clobetasol propionate 0.05% for 30 consecutive days and with placebo PBM twice a week. The experimental group will be treated with placebo gel for 30 consecutive days to mask the treatment and patients will receive PBM twice a week during 1 month (laser λ = 660±10 nm; power 100mW; radiant energy 177J/cm2; 5-s exposure time per point and 0.5J of energy per point. The primary variable (pain) and the secondary variables including clinical scores and functional scores as well as patient anxiety and depression (The Hospital Anxiety and Depression Scale-HADS), will be evaluated at the baseline, once a week during treatment and after 30 and 60 days of follow up. Evaluation of clinical resolution will be performed at the end of the treatment (30 days). Evaluation of recurrence will be performed after 30 and 60 days of follow up. Serum and salivary levels of IL-6, IL-10, IL-1β, INF-γ and TNF-α will be evaluated at baseline and at the end of treatment (30 days). Quality of life will be evaluated by OHIP-14 questionnaire at baseline, at the end of treatment and after 30 and 60 days of follow up. The chi-square test, Student's t-test and ANOVA will be used and the level of significance of 5% will be considered (p \< 0.05).

Conditions

• Lichen Planus, Oral
• Low-Level Light Therapy

Interventions

DRUG

Propionate clobetasol gel 0.05%

Patients will be treated with Propionate clobetasol gel 0.05% for 30 consecutive days and with placebo laser twice a week. Patients will be instructed to apply the propionate clobetasol gel 0.05% in the entire lesion three times/days. To prevent oral candidiasis, patients will use micostatin solution (Nystatin oral suspension 100,000 USP/ml) once a day during 4 weeks.

DEVICE

Photobiomodulation

Patients will be treated with localized PBM with a diode laser with continuous wave (laser λ = 660 nm; power 100mW;radiant energy: 177J/cm2; 5-s exposure time per point and 0.5J of energy per point) applied directly to the surrounding oral mucosa and to the center of OLP, always by the same operator, twice a week for 4 weeks, totaling 8 session. The number of points will be variable according to the lesion size. The output power of the laser equipment will be evaluated using a power meter (Laser Check; MMOptics LTDA, São Paulo, Brazil) before treatment to confirm the effective mean power as well as the doses applied during the procedure.

OTHER

Placebo gel

Placebo gel for 30 consecutive days to mask the treatment

OTHER

Placebo Photobiomodulation

Laser device will be positioned over the lesion but will be switched off to mask the treatment.

Sponsors & Collaborators

• University of Nove de Julho

  lead OTHER

Principal Investigators

• Maria Fernanda SD Rodrigues, PhD · University of Nove de Julho

Study Design

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

TRIPLE

Model

PARALLEL

Eligibility

Min Age

18 Years

Sex

ALL

Healthy Volunteers

No

Timeline & Regulatory

Start

2018-11-01

Primary Completion

2020-11-30

Completion

2020-12-31

Countries

• Brazil

Study Locations