Abstract
It is known that good wettability of enamel and dentin surfaces is a key factor in enhancing adhesion of restorative materials in dentistry. Here, we report on a femtosecond laser surface texturing approach that makes both the enamel and dentine surfaces superwetting. In contrast to the traditional chemical etching that yields random surface structures, this new approach produces engineered surface structures. The surface structure engineered and tested here is an array of femtosecond laser-produced parallel microgrooves that generates a strong capillary force. Due to the powerful capillary action, water is rapidly sucked into this engineered surface structure and spreads even on a vertical surface.
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This work was supported by the US Air Force Office of Scientific. The authors acknowledge Y. Sun for discussions.
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Vorobyev, A.Y., Guo, C. Femtosecond laser surface structuring technique for making human enamel and dentin surfaces superwetting. Appl. Phys. B 113, 423–428 (2013). https://doi.org/10.1007/s00340-013-5482-6
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DOI: https://doi.org/10.1007/s00340-013-5482-6