TY JOUR TI CLINICAL ASSESSMENT OF THE MAINTENANCE THERAPY EFFICACY IN THE ORTHODONTIC TREATMENT OF ADOLESCENTS WITH CHRONIC DISEASES OF THE UPPER PART GASTROINTESTINAL TRACT KW adolescents KW gastroduodenal pathology KW orthodontic treatment KW periodontal indexes KW caries JO Tavricheskiy Mediko-Biologicheskiy Vestnik AU Kolesnik, K.A. AU Kaladze, N.N. AU Severinova, S.K. PY 2022 IS 23 PB V.I. Vernadsky Crimean Federal University