Comparison of the shaping characteristics of Neolix and Protaper Universal systems in preparation of severely-curved simulated canals

• Maryam Forghani ^[1] ; Maryam Hezarjaribi ^[1] ; Hamidreza Teimouri ^[2]
  1. [1] Mashhad University of Medical Sciences

     Mashhad University of Medical Sciences

     Irán

     
  2. [2] Private Practice, Tehran, Iran
• Localización: Journal of Clinical and Experimental Dentistry, ISSN-e 1989-5488, Vol. 9, Nº. 4 (Abril), 2017, págs. 556-559
• Idioma: inglés
• Enlaces
  • Texto completo
• Resumen

  • The aim of this in vitro study was to compare the shaping characteristics of two types of nickel-titanium endodontic file systems with regard to the following parameters: Canal straightening, Canal deviation and Instrumentation time.

    Fifty severely curved canals simulated in resin blocks were prepared to an apical size 25 using Protaper Universal orNeolix systems (n=25 canals/group). The angle of canal curvature was determined before and after instrumentation. Pre- and post-operative images were superimposed to determine any canal deviation. The instrumentation time was also recorded. The data were statistically analyzed by using independent sample t-test and the Mann-Whitney U-test.

    There were no significant differences between the groups in terms of the change in canal angle (P > 0.05). The Neolix system produced less canal deviation at 7 of the 12 measuring points (p<0.05). The Neolix system also required less instrumentation time (p<0.05).

    Both rotary systems were capable of maintaining the original curvature of the root canal; however, the Neolix system resulted in less canal deviation as well as shorter instrumentation time.