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. 2018 Sep 7;13(9):e0202262. doi: 10.1371/journal.pone.0202262

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© 2018 Ionescu et al

This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Fig 4 — A 6 μl drop of HPLC-grade ultrapure water was photographed (EOS 500D camera, EF 100mm 2.8f macro lens and Speedlite 470EX bounced flash, Canon, Tokio, Japan) on the surfaces of the experimental specimens as follows: A, machined; B, grit-blasted; C, laser-treated; D, enamel. The hydrophobic behavior of grit-blasted and laser microtextured titanium surfaces can be clearly seen compared to machined ones. The hydrophobic behavior of laser-treated surfaces is likely due to a lotus leaf effect. Hydrophilic enamel reference surfaces are also shown.