Using laser therapy to improve mouth opening in patients with Oral Submucous Fibrosis

To Determine and Compare the Adjunctive Effect of Photobiomodulation With 940nm Diode Laser on Maximal Interincisal Mouth Opening Versus Conventional Non-invasive Management in Moderate Oral Submucous Fibrosis: A Patient and Outcome Assessor Blinded, Multiple- Arm, Randomized, Placebo Controlled Clinical Trial

Not applicable Interventional All India Institute of Medical Sciences · NCT06639009

This study is testing whether laser therapy can help people with Oral Submucous Fibrosis open their mouths more easily and improve their overall oral health.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment315 (estimated)
Ages18 Years to 99 Years
SexAll
SponsorAll India Institute of Medical Sciences Academic / other
Locations1 site (New Delhi, National Capital Territory of Delhi)
Trial IDNCT06639009 on ClinicalTrials.gov

What this trial studies

This clinical trial investigates the effectiveness of 940nm laser photobiomodulation therapy in enhancing mouth opening in patients diagnosed with moderate Oral Submucous Fibrosis, a precancerous condition. The study is designed as a patient and outcome assessor blinded, multiple-arm, randomized placebo-controlled trial. Participants will be divided into three groups to receive different forms of treatment, including laser therapy and conventional management. The trial will also evaluate the impact of the therapy on oral burning sensation, cheek flexibility, muscle activity, inflammatory markers, and overall oral health quality of life over a period of three months.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 and older with symptomatic bilateral moderate Oral Submucous Fibrosis who have not undergone any interventions for at least three months prior to the study.

Not a fit: Patients with other oral potentially malignant disorders or those with a history of malignancies or certain systemic diseases may not benefit from this study.

Why it matters

Potential benefit: If successful, this therapy could significantly improve mouth opening and quality of life for patients suffering from Oral Submucous Fibrosis.

How similar studies have performed: While the specific application of laser therapy in this context may be novel, similar studies have shown promising results in using photobiomodulation for various conditions.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

Subjects with symptomatic bilateral Moderate≥ 18 years of age Subjects who have had no medical, surgical or physical intervention for OSMF at least three months prior to participation in this study.

Subjects willing to participate in the study

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Exclusion Criteria:

Subjects with any other Oral potentially malignant disorders ( Leukoplakia/ Oral lichen planus etc ) other than OSMF.

Subjects with OSMF with dysplasia in previous biopsy, suspicious lesion that requires biopsy for histopathological examination Subjects with any current / past history of any malignancies Subjects with any developmental disorders, cranio-maxillomandibular bony pathologies/ trauma, current odontogenic / maxillofacial infection or surgeries causing trismus Subjects with uncontrolled systemic diseases, psychiatric disorders o Subjects with open wounds on the sites to be exposed to LASER PBM or to EMG. Subjects with any scars, tattoos, moles, traumatic, ulcerative, pathological skin lesion on facial skin in region of masseter muscle Subjects unwilling to shave facial hair for electromyography. Subjects with history of Autoimmune diseases like Scleroderma, Dermatomyositis, oral vesiculobullous and Behçet's disease Subjects with history of any corticosteroid, immunosuppressive, anti inflammatory ,immune modulating medication in past six months Subjects with Temporomandibular Joint disorders, Cervical spondylosis muscle dystrophy or any neuromuscular disorders Pregnancy

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Where this trial is running

New Delhi, National Capital Territory of Delhi

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Oral Submucous FibrosistrismusBurning paindiode laserPhotobiologyElectromyographymolecular biologyoral health
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.