| 摘要 |
An orthodontic bracket includes a protective coating material on the bracket surface to increase resistance to wear and deformation and/or to improve surface properties. The coating layer includes a cured resin chemically bonded to or cross-linked with a plurality of organically modified inorganic particles. The protective coating layer makes the surface of the bracket very hard and resistant to abrasion. The entire bracket, or any portion thereof, can be coated. For example, the arch wire slot and/or ligation cover can be coated since these portions of the bracket typically receive the greatest mechanical stress and/or abrasion. The coating material can be applied in very thin layers such as less than 10 microns, thereby minimizing the effect that the coating has, on the overall shape and size of the orthodontic bracket.
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