title: Cutting efficiency of Reciproc and waveOne reciprocating instruments.
abstract: BACKGROUND
  The aim of the present study was to evaluate the cutting efficiency of 2 new reciprocating instruments, Reciproc and WaveOne.
  
  
  METHODS
  Twenty-four new Reciproc R25 and 24 new WaveOne Primary files were activated by using a torque-controlled motor (Silver Reciproc) and divided into 4 groups (n = 12): group 1, Reciproc activated by Reciproc ALL program; group 2, Reciproc activated by WaveOne ALL program; group 3, WaveOne activated by Reciproc ALL program; and group 4, WaveOne activated by WaveOne ALL program. The device used for the cutting test consisted of a main frame to which a mobile plastic support for the handpiece is connected and a stainless steel block containing a Plexiglas block (inPlexiglass, Rome, Italy) against which the cutting efficiency of the instruments was tested. The length of the block cut in 1 minute was measured in a computerized program with a precision of 0.1 mm. Means and standard deviations of each group were calculated, and data were statistically analyzed with 1-way analysis of variance and Bonferroni test (P < .05).
  
  
  RESULTS
  Reciproc R25 displayed greater cutting efficiency than WaveOne Primary for both the movements used (P < .05); in particular, Reciproc instruments used with their proper reciprocating motion presented a statistically significant higher cutting efficiency than WaveOne instruments used with their proper reciprocating motion (P < .05). There was no statistically significant difference between the 2 movements for both instruments (P > .05).
  
  
  CONCLUSIONS
  Reciproc instruments demonstrated statistically higher cutting efficiency than WaveOne instruments.
authors: Department of Endodontics, "Sapienza" University of Rome, Rome, Italy. Electronic address: endo@gianlucaplotino.com.
authors: Gianluca
authors: G
authors: Plotino
authors: Department of Endodontics, "Sapienza" University of Rome, Rome, Italy.
authors: Alessio
authors: A
authors: Giansiracusa Rubini
authors: Department of Endodontics, "Sapienza" University of Rome, Rome, Italy.
authors: Nicola M
authors: NM
authors: Grande
authors: Department of Endodontics, "Sapienza" University of Rome, Rome, Italy.
authors: Luca
authors: L
authors: Testarelli
authors: Department of Endodontics, "Sapienza" University of Rome, Rome, Italy.
authors: Gianluca
authors: G
authors: Gambarini
mesh_terms: D003722:Dental Alloys / Q000737:chemistry; D004867:Equipment Design; D006801:Humans; D008422:Materials Testing; D009532:Nickel / Q000737:chemistry; D019904:Polymethyl Methacrylate / Q000737:chemistry; D018915:Root Canal Preparation / Q000295:instrumentation*; D013499:Surface Properties; D013997:Time Factors; D014025:Titanium / Q000737:chemistry; D019415:Torque
chemical_list: D003722:Dental Alloys; C040654:titanium nickelide; D009532:Nickel; D019904:Polymethyl Methacrylate; D014025:Titanium
keywords: Cutting efficiency; NiTi instruments; cutting test; reciprocation