title: [Root canal preparation for obturation using nickel-titanium mechanical devices].
abstract: Engine-driven ProFile instruments manufactured by Maillefer (Switzerland) and Tulsa Dental Products (USA) have been used for cleaning and shaping root canals. Both of them are nickel titanium, U-shaped instruments designed for a controlled slow speed (250 rpm) rotary handpiece. In contrast to the Maillefer instruments ProFile Series 29 files (Tulsa Dental) show a constant 29% increase between tip diameters. As these more tapered instruments (ProFile 0.04; 0.06) are rotated, they produce a "crown-down" preparation, resulting in a tunnelform taper from orifice to apex. According to our experiences ProFile instruments are useful alternative tools for root canal preparation quickly and efficiently.
authors.affiliation: Semmelweis Orvostudományi Egyetem, Konzerváló Fogászati Klinika, Budapest.
authors.forename: A
authors.initials: A
authors.lastname: Fazekas
mesh_terms: D003762:Dental Instruments; D006801:Humans; D006814:Hungary; D009532:Nickel; D012389:Root Canal Obturation / Q000295:instrumentation*; D018915:Root Canal Preparation / Q000295:instrumentation*; D013557:Switzerland; D014025:Titanium
chemical_list: D009532:Nickel; D014025:Titanium