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Study of $Al–SiO_{2}$ Aesthetic Composite Coating on Orthodontic Metal Archwire
| Content Provider | MDPI |
|---|---|
| Author | Wu, Hao Peng Yang, Jie Yan, Yuwen Zheng, Bowen Algahefi, Ahmed Lotf Ma, Song Liu, Yi |
| Copyright Year | 2022 |
| Description | Nickel–titanium orthodontic wires (NTWs) play an essential role in orthodontic treatment. However, their corrosion and aesthetic properties limit their applications. To improve the aesthetic effects of nickel–titanium orthodontic archwires, we prepared aluminium–silicon dioxide $(Al–SiO_{2}$) as a biocompatible layer coated onto the NTWs. The $Al–SiO_{2}$ coating was first fabricated using physical vapor deposition magnetron sputtering, and its physicochemical and biocompatibility properties were investigated. $Al–SiO_{2}$ layers were well coated on the NTWs. The corrosion currents in the nickel–titanium (NiTi) control, $Al–SiO_{2}$-coated NiTi experimental, stainless steel (SS) control and $Al–SiO_{2}$-coated SS experimental groups were 23.72 μA $cm^{−2}$, 1.21 μA $cm^{−2}$, 0.22 μA $cm^{−2}$ and 0.06 μA $cm^{−2}$, respectively. $Al–SiO_{2}$-coated NTWs with reduced corrosion current density indicated that the preparation of $Al–SiO_{2}$ coating on the surface of NiTi and SS could reduce the tendency of electrochemical corrosion. The friction coefficients of orthodontic wires in the NiTi control, NiTi experimental, SS control, and SS experimental groups were 0.68, 0.46, 0.58 and 0.45, respectively. A low friction coefficient was observed in the $Al–SiO_{2}$-coated NTWs, and the reduced friction coefficient improved the efficiency of orthodontics. Furthermore, the excellent biocompatibility of the NTWs and SS coated with $Al–SiO_{2}$ indicates that $Al–SiO_{2}$ as a novel aesthetic layer could improve the physicochemical properties of NTW and SS without causing cytotoxicity, which has considerable potential for modification of NTW and SS surfaces. |
| Starting Page | 746 |
| e-ISSN | 20796412 |
| DOI | 10.3390/coatings12060746 |
| Journal | Coatings |
| Issue Number | 6 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-05-29 |
| Access Restriction | Open |
| Subject Keyword | Coatings Dentistry and Oral Surgery Aluminum–silicon Dioxide Surface Modification Corrosion Archwire Aesthetic |
| Content Type | Text |
| Resource Type | Article |
