Changing Concepts In Endodontic Retreatment
A few years ago many dentists considered rootcanal therapy to be a controversial and questionable treatment with unpredictable results.
Root-canal therapy was mostly performed on carefully selected single-rooted teeth. Infected or diseased posterior teeth were routinely extracted and replaced with removable or fixed
prostheses. Endodontic failures were routinely treated by extraction or apical surgery.