TY JOUR TI The usage of oral irrigator by pregnant women with the early stages of periodontal diseases KW professional hygiene KW pregnancy KW periodontitis KW irrigator KW questioning patients KW selection of tools for personal hygiene JO Actual problems in dentistry AU Petrov, I.A. AU Chernavsky, A.F. AU Белова, О.Е. PY 2016 IS 12 PB TIRAZH Publishing House