Eradication of microorganisms from an infected root canal before obturation is a primary focus of endodontic treatment, as well as the best predictor for the long-term success of the endodontic therapy. The purpose of this in vitro laboratory study was to evaluate the efficacy of a new tapered and stripped Er:YAG laser tip using PIPS (Photon Induced Photoacoustic Streaming) in root canals infec...

Sodium hypochlorite (NaOCl) accident is a very serious complication that might occur if sodium hypochlorite extrudes beyond the root canal space. it leads to tissue necrosis and induces a massive acute inflammatory response with its associated sequelae such as pain, swelling, and profuse hemorrhage. This paper describes a single visit endodontic retreatment of a case that experienced an acciden...