%0 Journal Article %T EVALUATION OF THE RESULTS OF REPEATED ENDODONTIC TREATMENT OF CHRONIC APICAL PERIODONTITIS USING BIOMATERIALS. CLINICAL OBSERVATION %A Sorokin, A.P. %A Gerasimova, L.P. %A Kabirova, M.F. %A Usmanova, I.N. %A Haybullina, R.R. %A Tuchvatullina, D.N. %A Khairullina, R.A. %A Latypova, E.R. %K repeated endodontic treatment, optical density, biomaterials, chronic apical periodontitis, densitometry %J Actual problems in dentistry %D 2022 %N 17 %P 5 %I TIRAZH Publishing House