Fig. 1From: Effects of blue-light LED toothbrush on reducing dental plaque and gingival inflammation in orthodontic patients with fixed appliances: a crossover randomized controlled trialPhotographs of a blue light-emitting toothbrush: (A) general view, (B) toothbrush heads in off and on modes, (C) exposure of LED light with 2-mm distance from the surfaceBack to article page