The effectiveness of low-level laser therapy combined with facial expression exercises in patients with moderate-to-severe Bell's palsy: A study protocol for a randomised controlled trial.

Background: Even though corticosteroid therapy and facial expression exercises were found to be effective, still 30% of participants with bell's palsy achieve incomplete recovery from the facial paralysis. The study objective was to evaluate the effectiveness of low-level laser therapy (LLLT) combined with progressive facial expression exercises in participants with moderate to severe bell's palsy.

Methodology: A total of 120 participants with idiopathic bell's palsy to be equally allocated in three groups.