The present book describes an evidence based account of the dilemma between the two most prominent treatment options to be chosen during a dental therapy i.e.Endodontic retreatment or Implants. It also enlightens about the outcomes of both the treatment modalities and their modes and measures of failure individually. It also compares the statistically data in order to give a numerical judgment to the readers for a better clinical decision making. This book may be of great use for all the dental practitioners and academicians to make a confident choice between Endodontic retreatment & Implants in order to give the patient a better dental care.