The textbook emphasizes that a thorough understanding of pulp cavity morphology and root canal anatomy is fundamental to the field of endodontics. It highlights that the root canal system is often complex and variable, with numerous configurations, and that these variations are influenced by factors like ethnicity, age, and gender.The text mentions that early research by Hess and Zurcher and later studies by Weine and Vertucci established that complex anatomies with multiple foramina, accessory canals, and other intricacies are common, not exceptional. Therefore, clinicians must assume that...