IRCT20160525028074N2 IRCT 2018-05-18 Kermanshah University of Medical Sciences Comparison the chamomile and normal saline mouthwash in the prevention of oral mucositis Comparison the chamomile and normal saline mouthwash in the prevention of chemotherapy-induced mucositis in children with leukemia 2018-06-10 anticipated 62 Complete https://irct.ir/trial/30922 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Not used, Assignment: Parallel, Purpose: Prevention, Other design features: Table of random numbers will be used For randomization, Randomization description: Table of random numbers will be used For randomization, Blinding description: In this study, only participants are unaware of the allocation of study groups. N/A Cancer. Intervention 1: Intervention group: patients in the intervention group are asked to brush their teeth after each meal and an hour before bedtime, 4 times a day, and 30 drops of chamomile mouthwash (Matrica drops) in half of the normal saline cans to be washed. Gargle for 10 seconds, and refrain from eating for 30 minutes, and continue for 16 days. Intervention 2: Control group: For the control group, only routine interventions were performed. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is I still do not have a plan to share unidentified individual data from participants in this study.