Patient presented with a non-vital pulp and chronic suppurative apical periodontitis. The pre-operative radiograph showed a radiolucent area surrounding the apical third of the root.
Three canals were located and instrumented. The distal root was not negotiable to the radiographic apex with hand or rotary files; so, the Sonendo GentleWave® procedure was used to augment cleaning and disinfection. The postoperative radiograph displays a dilacerated distal root and three portals of exit that were cleaned and filled.