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endo hand file resistence

Lucila Piasecki, Dina Al-Sudani, Alessio Giansiracusa Rubini, Giampaolo Sannino, Giampaolo Sonnino, Maurizio Bossù, Luca Testarelli, Roberto Di Giorgio, Ulisses Xavier da Silva-Neto, Christian Giampietro Brandão, Gianluca Gambarini
AIM: The manual files are still widely used for initial canal negotiation prior the use of nickel-titanium shaping instruments, to determine working length and to verify patency. A mechanical glide path can be performed using manual files with handpieces, such as M4 Handpiece (SybronEndo, USA) that allows a 30°/30° reciprocating motion. The Pathfinders (SybronEndo, USA) are hand files designed to negotiate complex canals, made from stainless steel (SS) or carbon steel (CS) alloys. The aim of this in vitro study was to compare cyclic fatigue resistance of these two different types of manual Pathfinder instruments used in a M4 reciprocating handpiece in double curved artificial canals...
July 2013: Annali di Stomatologia
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