The efficacy of R-Endo rotary NiTi and stainless-steel hand instruments to remove gutta-percha and Resilon.

Aim: To evaluate the efficacy of the R-Endo rotary nickel titanium instrumentation system and hand instrumentation to remove gutta-percha or Resilon from root canals.

Methodology: Eighty single-rooted teeth with straight canals were selected, the pulp chamber was opened, and the canals prepared to a size 30, 0.04 taper.