Friction coefficients and wear rates of different orthodontic archwires in artificial saliva

• Published in: Journal of materials science. Materials in medicine Vol. 24; no. 5; pp. 1327 - 1332
• Main Authors: Alfonso, M. V., Espinar, E., Llamas, J. M., Rupérez, E., Manero, J. M., Barrera, J. M., Solano, E., Gil, F. J.
• Format: Journal Article Publication
• Language: English
• Published: Boston Springer US 01.05.2013; Springer; Springer Nature B.V
• Subjects: Acer inoxidable; Assaig de materials; Assaigs de materials; Biological and medical sciences; Biomaterials; Biomedical engineering; Biomedical Engineering and Bioengineering; Biomedical materials; Body fluids; Ceramics; Chemistry and Materials Science; Composites; Dental Alloys - chemistry; Dental Stress Analysis; Enginyeria dels materials; Equipment Failure Analysis; Fricció (Mecànica); Friction; Friction - physiology; Glass; Hardness - drug effects; Head and neck surgery. Maxillofacial surgery. Dental surgery. Orthodontics; Humans; Materials; Materials Science; Maxillofacial surgery. Dental surgery. Orthodontics; Mechanical properties; Medical sciences; Natural Materials; Orthodontic Appliance Design; Orthodontic Wires; Orthodontics; Polymer Sciences; Propietats mecàniques; Regenerative Medicine/Tissue Engineering; Saliva, Artificial - pharmacology; Stainless Steel - chemistry; Steel, Stainless; Surface Properties - drug effects; Surfaces and Interfaces; Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases; Technology. Biomaterials. Equipments; Testing; Thin Films; Titanium - chemistry; Wire; Àrees temàtiques de la UPC; Stainless Steel 316L; Adhesive Wear; Wear Test; Wear Rate; Friction Coefficient; Orthodontic procedures; Wear; Friction coefficient; Wire; Saliva; Biomedical engineering; Tribology
• ISSN: 0957-4530; 1573-4838; 1573-4838
• DOI: 10.1007/s10856-013-4887-4

The aim of this paper is to analyze the influence of the nature of the orthodontic archwires on the friction coefficient and wear rate against materials used commonly as brackets (Ti–6Al–4V and 316L Stainless Steel). The materials selected as orthodontic archwires were ASI304 stainless steel, NiTi, Ti, TiMo and NiTiCu. The array archwire’s materials selected presented very similar roughness but different hardness. Materials were chosen from lower and higher hardness degrees than that of the brackets. Wear tests were carried out at in artificial saliva at 37 °C. Results show a linear relationship between the hardness of the materials and the friction coefficients. The material that showed lower wear rate was the ASI304 stainless steel. To prevent wear, the wire and the brackets have high hardness values and in the same order of magnitude.