CLINICAL EFFICACY OF HYDROXYAPATITE AND TRICALCIUM PHOSPHATE MODIFIED WITH HYALURONIC ACID IN THE TREATMENT OF PATIENTS WITH PERIIMPLANTITIS [KLINICHESKAYA EFFEKTIVNOST' PRIMENENIYA GIDROKSIAPATITA I TRIKAL'TSIIFOSFATA, MODIFITSIROVANNYKH GIALURONOVOI KISLOTOI V LECHENII PATSIENTOV S PERIIMPLANTITAMI] Article Garunov M.M., Grigoriyants L.A., Stepanov A.G., Apresyan S.V., Simonyan D.V. Stomatologiya. Vol. 101. 2022. P. 42-46