Cross sectional study of endodontic failures in patients reporting at RACKODS dental clinic

ABSTRACT

This study was conducted to evaluate the possible reasons for failure of Root canal treatment in patients screened at RAKCODS dental clinic. Clinical observation of endodontic failure reveals multiple etiologies. [Stabholz, Lin, Torabinejad]. The Washington Study of endodontic success and failure suggests percolation of periradicular exudate into the incompletely filled canal as the greatest cause of endodontic failure. 547 patients with pain were examined clinically and radio-graphically for signs of failed root canal treatment over a period of eight months on a standard criterion by three different observers. 128 patients were found with post endodontic complaints and were included in the study. The inclusion criterion was; root canal therapy done more than six months ago; pain on percussion, outcome of thermal test and presence of periradicular radiolucency. The quality of root filling and the radiographic apical periodontitis was accessed according to the criteria proposed by De-Moor at el. In molars the most common reason for failure was inadequate obturation [44.7%] followed by fractured instruments [21.1%] and overextended fillings [13.2%]. In premolars the most common reason for failure was inadequate coronal sealing [30%] and inadequate obturation [30%]. Test of Homogeneity of Variances, Welch and Brown-Forsythe were done which yielded significant results. Appropriate measures for the control and prevention of infection are essential to maximize the success of retreatment; including strict asepsis, complete chemomechanical preparation using antimicrobial irrigants, intracanal medication, adequate root canal filling, and proper coronal sealing