IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-10-1-32925 Original Research Paper EVALUATION OF THE DEGRADATION OF DENTAL RESTORATIVE MATERIALS CENTION-N, EQUIA, TETRIC N CERAM IN ARTIFICIAL SALIVA AT DIFFERENT TIME INTERVALS USING FTIR (FOURIER TRANSFORM INFRARED SPECTROSCOPY) - AN IN VITRO STUDY. Ummar Dr. Liza George Dr. Siraj P Ismail Dr. January 2021 10 1 01 02