Application of CT-Scan in Evaluation of Transportation of Root Canal during Endodontic Retreatment

Non surgical endodentic re-treatment is a way to correct the factors responsible for the failure of previous endodontic therapy. New Rotary Ni-Ti instruments have been shown to prepare moderate to severely curved root canals with efficient shaping and minimum straightening of the root canal. The rotary NiTi ProFile maintained the original curvature significantly better than hand stainless steel Flex-R.