The Twisted File is a rotary nickel titanium file used for endodontic (root) canal preparations. ¢ R-phase heat treatment technology ¢ Twisted design, not ground ¢ Advanced surface treatment ¢ Safer, efficient shaping ¢ Significantly lowers the number of files used per endo case ¢ Improves clinical efficiency in completing endo cases ¢ Reduces chairtime for patients ¢ Greatly lowers the level and cost of file inventory normally needed in the office