There exists a multitude of areas where procedural errors can potentially occur. Fortunately, the majority of procedural mistakes can be prevented, either through increased operator knowledge and understanding, or improving their attention whilst treating a patient.To avoid the incidences of endodontic malpractice and minimize the risks of procedural errors, the operator must consider ethical principles of clinical practice and adhere strictly to the standards of healthcare while performing the diagnosis and treatment. So procedural error can occur at any stage that is either prior, during or post treatment. This book describes about the various procedural mishaps and their management that a clinician must be aware of.