Wear of Nickel-Titanium Endodontic Instruments Evaluated by Scanning Electron Microscopy: Effect of Ion Implantation
- 1 September 2001
- journal article
- research article
- Published by Ovid Technologies (Wolters Kluwer Health) in Journal of Endodontics
- Vol. 27 (9), 588-592
- https://doi.org/10.1097/00004770-200109000-00009
Abstract
The present work analyzes possible increases in resistance to wear of nickel-titanium endodontic instruments that have undergone a process of ionic implantation. ProFile .04 taper #25 instruments were subjected to ionic implantation with bands of nitrogen ions of 250 KeV, currents in the order of 10 μA/cm2, and doses of 2 × 1017 ions/cm2. The instruments were used to make preparations in acrylic endodontic training blocks. Scanning electron microscopic investigations showed that after 60 s of work inside the endodontic training blocks nonionic implanted control instruments showed small modifications in their blades, and their tips showed the first signs of wear. After 240 s the control instruments showed consistent signs of wear and frequent changes to their surfaces. After 240 s of use the ionic-implanted instruments did not present any significant changes in the micromorphology of their surfaces. The implanted instruments did not manifest the typical signs of wear and did not show the surface changes that quickly affect the working life of untreated endodontic instruments manufactured from nickel-titanium.Keywords
This publication has 7 references indexed in Scilit:
- The effect of surface treatments of nickel-titanium files on wear and cutting efficiencyOral Surgery Oral Medicine Oral Pathology Oral Radiology and Endodontology, 2000
- Effect of sterilization on the cutting efficiency of rotary nickel-titanium endodontic filesOral Surgery Oral Medicine Oral Pathology Oral Radiology and Endodontology, 1999
- Wear of nickel-titanium lightspeed instruments evaluated by scanning electron microscopyJournal of Endodontics, 1999
- Microscopic evaluation of three endodontic files pre- and postinstrumentationJournal of Endodontics, 1998
- Shaping ability of ProFile.04 Taper Series 29 rotary nickel‐titanium instruments in simulated root canals. Part 1International Endodontic Journal, 1997
- Enhanced surface hardness by boron implantation in nitinol alloyJournal of Endodontics, 1996
- Machining efficiency and wear resistance of nickel-titanium endodontic filesOral Surgery Oral Medicine Oral Pathology Oral Radiology and Endodontology, 1996