00562naa#a2200181#i#450# EN\\bibl\21705 20240704002034.4 2077-7566 20160726b2016####ek#y0engy0150####ca RU The usage of oral irrigator by pregnant women with the early stages of periodontal diseases Journal article Ekaterinburg TIRAZH Publishing House 2016 6 с. Journal article local Petrov Ivan A. Chernavsky A. F. Белова О. Е. dental-press.ru