Efficacy of High-Level Laser Therapy in Managing Oral Mucositis Among Pediatric Patients Undergoing Hematopoietic Stem Cell Transplantation

Inclusion Criteria: * Children under the age of 18 years undergoing bone marrow transplantation during the phase of oral mucositis. * Oral mucositis starting from grade II on the WHO scale for OM. * Willingness to undergo treatment for four consecutive days and to return for evaluation 7 and 11 days after enrolment. Exclusion Criteria: * Previous treatment with photobiomodulation for oral mucositis. * Limited mouth opening less than 2 cm. * Presence of dysplastic oral lesions. * Radiotherapy in the head and neck area. * Vulnerable groups of patients or decision-impaired individuals as prisoners, handicapped and mentally retarded individuals