She graduated from Marmara University, Istanbul, Turkey with DDS, and received her PhD degree in Department of Operative Dentistry from Selçuk University, Konya, Turkey. Dr. Belli held the positions of professor and chair in Department of Endodontics, Selçuk University. Her current position is Professor and chair of Department of Endodontics at the same university. She has published and lectured extensively on dental materials including dental composites, adhesives, glass or polyethylene fibre reinforcement materials, conservative restoration of extensive cavities, restoration of endodontically treated teeth, post and cores, finite elemental analysis, composite polymerization, cuspal deflection, bond strength tests, leakage and biocompatibility studies. She is currently board member for CED-IADR and Turkish Endodontic Society.