Substantiation of manufacturing technology and clinical application of periodontal gel composition based on phytopreparation with antioxidant properties in the treatment of periodontal diseases in orthodontic patients. Olesia MARTOVLOS, Oleg HODOVANYI, Andrew MARTOVLOS, Taras PUPIN, Marianna SHANDRA, Maryana SHEVCHUK, Volodymyra DYRYK, Andriy KYSIL