Working length determination: concepts and challenges deals with in detailed knowledge about one of the most important steps in a root canal therapy viz. working length determination. The book talks about the history, the various concepts including the latest in determining the working length with utmost precision. The most interesting aspect of the book is its notes on the clinical challenges faced during this step and the troubleshooting measures to achieve success. The book provides one of the easiest to understand literature on this topic for better understanding and clinical application.