Development and evaluation of two PVD-coated beta-titanium orthodontic archwires for fluoride-induced corrosion protection

作者：Krishnan Vinod^*; Krishnan Anand; Remya R; Ravikumar K K; Nair S Asha; Shibli S M A; Varma H K; Sukumaran K; Kumar K Jyothindra

来源：Acta Biomaterialia, 2011, 7(4): 1913-1927.

DOI：10.1016/j.actbio.2010.11.026

• Orthodontic archwires
• Physical vapor deposition coating
• Cathodic arc physical vapor deposition
• Metal surface treatment
• Fluoride corrosion

The present research was aimed at developing surface coatings on beta titanium orthodontic archwires capable of protection against fluoride-induced corrosion. Cathodic arc physical vapor deposition PVD (CA-PVD) and magnetron sputtering were utilized to deposit thin films of titanium aluminium nitride (TiAIN) and tungsten carbide/carbon (WC/C) coatings on beta titanium orthodontic archwires. Uncoated and coated specimens were immersed in a high fluoride ion concentration mouth rinse, following a specially designed cycle simulating daily use. All specimens thus obtained were subjected to critical evaluation of parameters such as electrochemical corrosion behaviour, surface analysis, mechanical testing, microstructure, element release, and toxicology. The results confirm previous research that p titanium archwires undergo a degradation process when in contact with fluoride mouth rinses. The study confirmed the superior nature of the TiAIN coating, evident as many fewer changes in properties after fluoride treatment when compared with the WC/C coating. Thus, coating with TiAIN is recommended in order to reduce the corrosive effects of fluorides on beta titanium orthodontic archwires.

• 出版日期2011-4
• 单位河北医科大学