TY JOUR TI THE USE OF RAMAN-FLUORESCENCE SPECTROSCOPY TO IDENTIFY FACTORS AFFECTING THE MINERALIZATION OF THE SURFACE OF DENTAL HARD TISSUES AT THE STAGES OF RADIATION THERAPY KW radiation caries KW mineralization of hard tissues KW Raman fluorescence KW radiation therapy JO Actual problems in dentistry AU Belaykov, G.I. AU Nurieva, N.S. PY 2025 IS 21 PB TIRAZH Publishing House