This book comprehensively reviews and present the various advances made in obturation system of root canal in terms of materials and techniques, so as to fulfill the dream of a perfect three dimensional obturation in endodontics.This compilation simplifies this vast topic in endodontics and will benefit in understanding the obturation concepts well. The goal is to maintain dynamic relationship with all the root canal materials whether new or old as they are not exclusive to eachother and they move hand in hand.