›› 2016, Vol. 7 ›› Issue (1): 23-25.

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Development of nano-SiO2 coated orthodontic stainless steel wires

  

  • Received:2015-07-10 Revised:2015-11-05 Online:2016-03-25 Published:2016-04-06
  • Contact: Junqing Ma E-mail:junqingma2000@hotmail.com

Abstract: Objective:To develop nano-SiO2 coated orthodontic stainless steel wires and to study the surface characters and the basic physical properties of the coating. Methods: Nano silicon dioxide film was deposited on the surface of stainless steel orthodontic wire by using unbalanced magnetron sputtering method. The surface and cross section properties of the coatings were observed with scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS).We also compared the changes of friction property between the two archwires. Results: A nano silica coated wire was thus developed, and the silicon dioxide film was about 50 nm thick. The size and the distribution of silica is uniform, and the surface is bright and clean. The friction property of the coating was obviously superior to that of the stainless steel wire. Conclusions: The nano silica coating on the surface does not change the size of the wire. With good surface properties ,better friction properties and photochemical activity it is better for clinical use.

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