00609naa#a2200193#i#450# EN\\bibl\21705 /en/manage/index 20251113222949.4 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. fht.editorum.ru /en/manage/index