Dental Rotary Taper File Niti Root Canal Hand Shapping Finishing Files 21mm 25mm. The system is comprised of three shaping (S1 and S2) and three finishing (Fl, F2 and F3) files. A maxillary second molar and a second premolar were shaped with files, and smooth uniformly tapered canals were created more easily than with stainless steel hand files.
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