An objective evaluation comparing the physical properties of two brands of stainless steel endodontic hand files.
The purpose of this study was to evaluate the physical properties of a flexible stainless steel K-type hand file recently introduced by Brasseler USA (F-Style files; Brasseler USA, Savannah, GA), in comparison to those of a well-studied instrument (Flex-o-files; Maillefer-Dentsply, Ballaigues, Switzerland), that has been on the market for more than 20 yr. The physical properties measured included torque at failure, angular deflection at failure, flexibility, and consistency of diameter at 3 mm from the cutting tip; and the evaluations were carried out on size #10 through #50 files of each of the two brands being tested. The results indicated that the Brasseler instruments were inherently more flexible, but had smaller diameters, lower torque, and angular deflection values at failure, than those of the Maillefer files.
Dearing
Gregory J
GJ
Department of Endodontics, Temple University, School of Dentistry, Philadelphia, PA 19140, USA.
Kazemi
Reza B
RB
Stevens
Roy H
RH
D055598:Chemical Phenomena; D002627:Chemistry, Physical; D004867:Equipment Design; D004868:Equipment Failure; D006801:Humans; D008422:Materials Testing; D018583:Pliability; D018915:Root Canal Preparation / Q000295:instrumentation*; D013193:Stainless Steel / Q000737:chemistry*; D013499:Surface Properties; D019415:Torque
D013193:Stainless Steel