Comparative analysis of Nickel-Titanium rotary endodontic file systems

Abstract

Endodontic files are used for shaping and cleaning purpose during the root canal treatment of infected tooth. These files are made from nickel-titanium orthodontic wire alloy or Nitinol that has high strength and more flexibility as compare to stainless steel. This study compares two endodontic file systems namely ProFile and Twisted. These files models are analyzed using finite element method under similar loading conditions. Non-linear material behavior is considered during analysis and stress distribution is obtained under torsional and bending loading conditions. The obtained results are presented in form of stress contours and rigidity curve. Based on results obtained, it was found that the Twisted file system is more flexible as compared to ProFile system.