%0 Journal Article %T COMPARATIVE CHARACTERISTICS OF TEETH HARD TISSUES WITH DIFFERENT WAYS OF PREPARATION %A Chechun, N.V. %A Bondarenko, O.V. %A Sysoeva, O.V. %A Tokmakova, S.I. %K ultrasonic tooth preparation, morphology of enamel and dentin, scanning microscopy tooth %J Actual problems in dentistry %D 2015 %N 11 %P 2 %I TIRAZH Publishing House