TY JOUR TI APPLICATION OF BIOREGENERATIVE MATERIALS IN THE TREATMENT OF PERIODONTITIS AND PERIIMPLANTITIS: A SYSTEMATIC REVIEW KW bioregenerative materials KW platelet-rich fibrin (PRF) KW hydrogels KW bioactive glass KW stem cells KW inflammatory oral diseases KW periodontitis KW peri-implantitis KW tissue regeneration KW systematic review JO Actual problems in dentistry AU Risovannaya, O.N. AU Andreasyan, T.S. PY 2025 IS 21 PB TIRAZH Publishing House