TY JOUR TI INTERVIEWING AS A METHOD OF LEVEL OF SANITARY AND HYGIENIC KNOWLEDGE KW interview KW students KW dental hygiene KW nutrition KW risk factors KW motivation JO Actual problems in dentistry AU Averianov, S.V. AU Romeyko, I.V. AU Pupykina, E.V. PY 2015 IS 11 PB TIRAZH Publishing House