Effects of diamond-like carbon coating on frictional and mechanical properties of orthodontic brackets: An in vitro study


Danisman H., Celebi F., DANIŞMAN Ş., Bicakci A. A.

APOS Trends in Orthodontics, cilt.12, sa.1, ss.13-19, 2022 (ESCI) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 12 Sayı: 1
  • Basım Tarihi: 2022
  • Doi Numarası: 10.25259/apos_79_2021
  • Dergi Adı: APOS Trends in Orthodontics
  • Derginin Tarandığı İndeksler: Emerging Sources Citation Index (ESCI), Scopus
  • Sayfa Sayıları: ss.13-19
  • Anahtar Kelimeler: Coating, Diamond-like carbon, Friction, Bracket, SELF-LIGATING BRACKETS, SURFACE-TOPOGRAPHY, CANINE RETRACTION, SLIDING MECHANICS, FORCES, ARCHWIRES, FILMS, COEFFICIENTS, DEPOSITION, REDUCTION
  • Kayseri Üniversitesi Adresli: Hayır

Özet

© 2022 Published by Scientific Scholar on behalf of APOS Trends in Orthodontics.Objectives: The aim of this study is to apply a diamond-like carbon (DLC) coating on orthodontic brackets and to examine the effects of the coating on surface properties and friction. Material and Methods: 0.022-inch upper right canine brackets, 0.018-inch stainless steel wires, and 0.019 × 0.025-inch stainless steel wires were used in the study. Half of the brackets were treated with physical vapor deposition technique and coated with DLC. Different binary groups constituted of coated and uncoated brackets and wires were subjected to friction experiments using the Instron universal testing machine (Instron, Norwood, MA, USA). The surface properties of the coatings were evaluated using Raman, Scanning Electron Microscopy, and non-contact optical profilometer. Results: The friction force values between the DLC-coated brackets and the stainless-steel wires in both dimensions were found to be statistically significantly lower than the friction force between the uncoated brackets and the wires (P < 0.001). The surface roughness value, especially around the slot groove decreased significantly in the coated brackets (P < 0.05). DLC coating layer thickness is approximately 1.0 μm (806 nanometers). Conclusion: DLC coating improves the surface properties of orthodontic brackets, and DLC coating process remarkably reduced the friction force.