Bios:Dr. Debelian has completed his specialization in Endodontics from the University of Pennsylvania, USA in 1991 and received the Louis I. Grossman student award in Endodontics. He has taught as a clinical instructor and associate professor at the endodontic program at University of Oslo (UIO), Norway from 1991 to 2010. He has concluded his PhD studies at UIO in 1997, which gave him two scientific awards from the Europen Society of Endodontology (ESE) and from the Norwegian Dental Association both in 1997. His is an adjunct visiting professor at the post-graduate program in endodontics at UPenn. Dr. Debelian maintains a private practice limited to endodontics as well as an advance endodontic microscopy center – ENDO INN. Dr. Debelian has authored 6 chapter books in Endodontics, one book in Endodontics and written more than 80 scientific and clinical papers