Corrosion Science and Technology

The Corrosion Science Society of Korea (한국부식방식학회)
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Effects of ta-C Coatings on Surface Characteristics of Dental Ni-Ti Files

치과용 Ni-Ti파일의 표면특성에 미치는 ta-C코팅효과

  • Received : 2023.10.24
  • Accepted : 2023.10.25
  • Published : 2023.10.30
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Abstract

Dental Ni-Ti files must ensure stability and resistance to fatigue fracture. DLC and ta-C were coated to remove defects on the surface and ensure stability, and the surface characteristics were investigated. When coated with DLC, it was black, and in case of ta-C coating, it was blue-black. Scratches, which are defects caused by mechanical processing, were formed on the surface of the un-coated Ni-Ti file from the end of the file along the direction of processing, with the Pro-file appearing in the vertical direction and the K-file appearing in the file direction. Scratches were reduced on the coated surface, and the surface roughness was greatly reduced after coating compared to before coating. The un-coated Ni-Ti file had the lowest hardness, the DLC-coated file had the highest hardness, and ta-C showed relatively high hardness. The elastic modulus of the DLC coating film was high, and the ta-C elastic modulus was low. The adhesion of the DLC coating film tended to be higher than that of ta-C, and the wear loss amount of DLC coating of taC was lower. The corrosion potential of the ta-C coating increased significantly, and the corrosion current density decreased.

Keywords

Acknowledgement

본 연구논문은 2023년 조선대학교 교내연구비 지원으로 수행되었음.

References

  1. B. Dalton, Clark, D. Orstavik, C. Phillips, M. Pettiette, M. Trop, Bacterial Reduction with Nickel-Titanium Rotary Instrumentation, Journal of Endodontics, 24, 763 (1998). Doi: https://doi.org/10.1016/S0099-2399(98)80170-2
  2. S. B. Alapati, W. A. Brantley, T. A. Svec, J. N. Powers, J. Mitchell, Scanning Electron Microscope Observations of New and Used Nickel-Titanium Rotary Files, Journal of Endodontics, 29, 667 (2003). Doi: https://doi.org/10.1097/00004770-200310000-00014
  3. H. C. Choe, J. U. Kim, S. K. Park, Effects of Mo Content on Surface Characteristics of Dental Ni-Ti Alloys, Corrosion Science and Technology, 22, 64 (2010). Doi: https://doi.org/10.14773/cst.2023.22.1.64
  4. A. M. Elnaghy, S. E. Elsaka, Mechanical Properties of ProTaper Gold Nickel-Titanium Rotary Instruments, International Endodontic Journal, 49, 1073 (2016). Doi: https://doi.org/10.1111/iej.12557
  5. G. Plotino, N. M. Grande, M. M. Bellido, L. Testarelli, G. Gambarini, Influence of Temperature on Cyclic Fatigue Resistance of ProTaper Gold and ProTaper Universal Rotary Files, Journal of Endodontics, 43, 200 (2017). Doi: https://doi.org/10.1016/j.joen.2016.10.014
  6. H. Walia, W. A. Brantley, H. Gerstein, An Initial Investigation of the Bending and Torsional Properties of Nitinol Root Canal Files, Journal of Endodontics, 14, 346 (1988). Doi: https://doi.org/10.1016/s0099-2399(88)80196-1
  7. A. Madarati, M. J. Hunter, P. M. H. Dummer, Management of Intracanal Separated Instruments, Journal of Endodontics, 39, 569 (2013). Doi: https://doi.org/10.1016/j.joen.2012.12.033
  8. B. Sattapan, G. J. Nervo, J. E. A. Palamara, H. H. Messer, Defects in Rotary Nickel-Titanium Files after Clinical Use, Journal of Endodontics, 26, 161 (2000). Doi: https://doi.org/10.1097/00004770-200003000-00008
  9. Y. H. Jeong, C. H. Lee, C. H. Chung, M. K. Son, H. C. Choe, Effects of TiN and WC Coating on the Fatigue Characteristics of Dental Implant, Surface and Coatings Technology, 243, 71 (2014). Doi: https://doi.org/10.1016/j.surfcoat.2012.02.046
  10. Y. S Kim, Synergistic Effect of Nitrogen and Molybdenum on Localized Corrosion of Stainless Steels, Corrosion Science and Technology, 9, 20 (2010). Doi: https://doi.org/10.14773/cst.2010.9.1.020
  11. Y. Choi, C. Y. Jeong, Influence of Electrolyte on the Shape and Characteristics of TiO2 during Anodic Oxidation of Titanium, Corrosion Science and Technology, 22, 193 (2023). Doi: https://doi.org/10.14773/cst.2023.22.3.193
  12. H. S. Heo, D. H. Shin, S. J. Kim, Effects of CrN and TiN Coating by Hydrogen Embrittlement of Aluminum Alloys for Hydrogen Valves of Hydrogen Fuel Cell Vehicles on Mechanical Properties, Corrosion Science and Technology, 22, 221 (2023). Doi: https://doi.org/10.14773/cst.2023.22.4.221