question: Compared to group 3 with #16 ProGlider (Dentsply Maillefer) rotary instruments what was the result of group 2 with Path-File (Dentsply Maillefer) #1, #2, and #3 on performance of path-finding files?
context: ProTaper Next system maintained root canal curvature well and was safe to use either with path-finding files or alone.