The main objective of this book is to reduce endodontic failure, increase the success rate of endodontic treatment and decrease the percentage of tooth extraction so as to conserve a naturally compromised tooth structure as opposed to having a dental implant. The first study focuses on the possibility of having a filling material which could provide a tight seal with the desired properties. The in Vitro study targeted on elimination of microleakage by measuring the ability of the existing materials to obturate the root canal, 3 dimensionally using different obturation techniques. This was...