Cleaning and Shaping Oval Canals with 3Â Instrumentation Systems: A Correlative Micro-computed Tomographic and Histologic Study

There was no significant difference in the amount of unprepared surface areas between the 3 instrument systems, except for the comparison between the SAF and XP-endo Shaper in the apical 4-mm segment. None of them prepared 100% of the root canal walls. The cleaning ability of the 3 systems was similar.