%0 Journal Article %T METHODOLOGICAL PRINCIPLES OF TREATING CHEILITIS IN THE FAR NORTH %A Isaeva, L.I. %A Borisova, E.G. %A Khrustaleva, Y.A. %K various forms of cheilitis, chronic recurrent fissure of the lip, improvement of medical care, Far North, level of vitamin D and E in blood serum %J Actual problems in dentistry %D 2023 %N 19 %P 4 %I TIRAZH Publishing House