A Clinical Trial of the Administration of Light Therapy to Prevent and Treat Mouth Sores in Children With Cancer

Light therapy will be administered using the cluster probe on the external cheeks bilaterally and intraorally using the lollipop probe for patients ≥7 years of age. Patients \< 7 years of age will not receive intraoral treatment with the lollipop. Instead, they will be asked to open their mouth while the covered cluster probe is held externally to treat their intraoral membranes. Each treatment (both external cheeks and intraoral buccal region) will be administered over 1 min with a Modulation Frequency 2.5Hz, Skin Conduction nS 001, and Beam Power mW 000, for a total treatment time of 3 minutes.