Uneven malaligned teeth are a problem afflicting large numbers of people, having significant economic and societal repercussions. Sliding a tooth along an archwire during orthodontic treatment involves a frictional type of force which resists this movement, causing a number of adverse effects. First, using excessive orthodontic force, leads to unwanted movements of the anchor teeth and increasing the risk of damage to the roots of the teeth. Furthermore, the frictional force is distributed unevenly between the archwire and the brackets interface, leading to strong adhesion between the wire and the bracket’s corner. This force-asymmetry causes lengthening of treatment and frequent visits for fine-tuning of the orthodontic appliances. Despite numerous efforts to lower the friction, no satisfactory solution to this issue has been obtained. In the present work a self-lubricating metal coating containing fullerene-like WS2 (IF) nanoparticles is demonstrated. Such coatings significantly reduce archwire friction, and may alleviate the adverse complications. Moreover, a number of other medical applications of the self-lubricating coatings are foreseen.
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Thorstenson G.A., Kusy R.P. Am. J. Orthod. Dentofacial. Orthop. 2001, 120: 361
Cash A., Curtis R., Garrigia-Majo D., McDonald F., Eur. J. Orthod. 2004, 26: 105
Fuss Z., Tsesis I., Lin S., Dent. Traumatol. 2003, 19: 175
Roberts-Harry D., Sandy J., Br. Dent. J. 2004, 196: 255
Chung-Chen J., Jang-Jaer L., Hsing-Yu C., Zwei-Chieng J.C., Hsin-Fu C., Yi. J., Angle Orthod. 2004, 75: 626
Kusy R.P., Angle Orthod. 2000, 70: 366
Kusy R.P., Whitley J.Q., Semin. Orthod. 1997, 3: 166
Jones S.P., Tan C.C., Davies H.H., Eur. J. Orthod. 2002, 24: 183
Tenne R., Margulis L., Genut M., Hodes G. Nature 1992, 360: 444
Rapoport L., Bilik Y., Feldman Y., Homyonfer M., Cohen S.R., Tenne R., Nature, 1997, 387: 791
Chen W.X., Xu Z.D., Tenne R., Rosenstveig R., Chen W.L., Gan H.Y., Tu. J.P., Adv. Eng. Mater.. 2002, 4: 686
Rapoport L., Fleischer N., Tenne R., J. Mater. Chem. 2005, 15: 1782
Mallory G.O., Hajdu J.B., 1990 Electroless Plating – Fundamentals and Applications William Andrew Publishing/Noyes, New York pp. 269–287
Redlich M., Mayer Y., Harari D., Lewinstein I. Am. J. Orthod. Dentofacial. Orthop. 2003, 124: 69
Rapoport L., Leshchinsky V., Lapsker I., Volovik Y., Nepomnyashchy O., Lvovsky M., Popovitz-Biro R., Feldman Y., Tenne R., Wear 2003, 255: 785
Drummond C., Alcantar N., Israelachvili J., Tenne R., Golan Y., Adv. Funct. Mater. 2001, 11: 348
Rapoport L., Leshchinsky V., Lapsker I., Volovik Yu., Nepomnyashchy O., Lvovsky M., Popovitz-Biro R., Feldman Y., Tenne R., Wear 2003, 255: 785
Cizaire L., Vacher B., Le Mogne T., Martin J.M., Rapoport L., Margolin A., Tenne R., Surf. Coat. Tech. 2002, 160: 282
Acknowledgment
R. Tenne is the holder of the Drake Family Chair in Nanotechnology and the director of the Helen and Martin Kimmel Centre for Nanoscale Science. H.D. Wagner holds the Livio Norzi Chair in Materials Science.
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Katz, A., Redlich, M., Rapoport, L. et al. Self-lubricating coatings containing fullerene-like WS2 nanoparticles for orthodontic wires and other possible medical applications. Tribol Lett 21, 135–139 (2006). https://doi.org/10.1007/s11249-006-9029-4
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DOI: https://doi.org/10.1007/s11249-006-9029-4