The book describes teeth development and components with classification of canal configurations. Different methods of studying of root canal morphology were illustrated and compared. Followed by detailed description of root canal morphology of individual tooth with concentration on third molar. There has been little published work about root and canal morphology of third molar in the dental literature and no published work conducted on Jordanian or Middle Eastern population. The aim of this monograph was to investigate root and canal morphology of third molar in a Jordanian population.