Abstract
[...]the primary objective of this study was to determine the most common cause of extraction after RCT in patients visiting the King Khalid University (KKU) Dental Clinic. The study protocol was approved by the Institutional Review Board, and ethical approval was obtained from the Scientific Research Committee, College of Dentistry, KKU, Abha, Saudi Arabia (Approval no. [...]the causes of extraction ranged from non-restorable teeth due to recurrent caries (55%), periodontal involvement of tooth (8%), up to endodontic errors (18%), prosthodontic errors (5%), and tooth fracture (14%). First untoward events and reasons for tooth extraction after nonsurgical endodontic treatment in Taiwan.