title: Comparative characteristics of endodontic drills.
abstract: The work concerns the analysis of influence of the wear process of endodontic instruments on the mechanical and physico-chemical properties of the materials from which they are made. A detailed study of the microstructure, mechanical properties and corrosion resistance in the environment simulating work of the tool was conducted. The research was done for the new Mtwo endodontic files and after six times of use. In addition, the observations with a scanning electron microscope in order to reveal possible damage caused by the impact of a corrosive environment were carried out. The results showed that use of the tool by six times revealed damage at the edges of the blades and may cause a lack of continuity of the cutting line resulting in the uneven distribution of the resistive force which acts on the tool during operation.
authors.affiliation: Silesian University of Technology, Faculty of Biomedical Engineering, Department of Biomaterials and Medical Devices Engineering, Zabrze, Poland.
authors.forename: Sonia
authors.initials: S
authors.lastname: Loska
authors.affiliation: Silesian University of Technology, Faculty of Biomedical Engineering, Department of Biomaterials and Medical Devices Engineering, Zabrze, Poland.
authors.forename: Marcin
authors.initials: M
authors.lastname: Basiaga
authors.affiliation: Silesian University of Technology, Faculty of Biomedical Engineering, Department of Biomaterials and Medical Devices Engineering, Zabrze, Poland.
authors.forename: Magdalena
authors.initials: M
authors.lastname: Pochrząst
authors.affiliation: Medical University of Łódź, Department of General Dentistry, Łódź, Poland.
authors.forename: Monika
authors.initials: M
authors.lastname: Łukomska-Szymańska
authors.affiliation: Silesian University of Technology, Faculty of Biomedical Engineering, Department of Biomaterials and Medical Devices Engineering, Zabrze, Poland.
authors.forename: Witold
authors.initials: W
authors.lastname: Walke
authors.affiliation: Silesian University of Technology, Faculty of Biomedical Engineering, Department of Biomaterials and Medical Devices Engineering, Zabrze, Poland.
authors.forename: Jadwiga
authors.initials: J
authors.lastname: Tyrlik-Held
mesh_terms: D003343:Corrosion; D003762:Dental Instruments; D004560:Electricity; D004563:Electrochemistry; D004708:Endodontics; D006244:Hardness; D009532:Nickel / Q000737:chemistry; D012463:Saliva / Q000737:chemistry; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry
chemical_list: C040654:titanium nickelide; D009532:Nickel; D014025:Titanium