%0 Journal Article %T COMPARATIVE ASSESSMENT OF EFFICIENCY ULTRASONIC AND SOUND METHODS OF ACTIVATION IRRIGATIONAL SOLUTION IN ROOT CHANNELS WITH SIMPLE AND DIFFICULT ANATOMY (PILOT STUDY) %A Sorokoumova, D.V. %A Griroriev, S.S. %A Lapteva, K.A. %A Shabalina, d.S. %A Kiseleva, D.V. %A Shagalov, E.S. %A Leonova, L.V. %K ultrasonic activation, sound activation, simple and difficult anatomy of root channels, the combined activation method %J Actual problems in dentistry %D 2019 %N 15 %P 5 %I TIRAZH Publishing House