Adequate cleaning and shaping of the canals to reduce the microorganisms below the threshold level is one of the most important goals of endodontic treatment. With the advent of newer materials and techniques, this goal can be achieved in a single appointment in many teeth which have been endodontically treated, but have failed the endodontic treatment. This case series highlights single visit endodontic retreatment as an important aspect of day-to-day dental practise.