To (re)treat or not to (re)treat

– The reasons for failures of root canal treatments and the aims of treating periapical periodontitis;

– The difference between disease centered outcomes and patient centered outcomes;

– The advantages and disadvantages of treating asymptomatic persistent periapical periodontitis;

– The reasons to treat or not treat periapical periodontitis;

– The risks and alternatives of endodontic retreatments;

– The significant factors that determine the success of a retreatment.