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. 2021 Aug 17;26(1):939–955. doi: 10.1007/s00784-021-04077-2

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© The Author(s) 2021, corrected publication 2022

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Fig. 5 — Representative SEM images of the treatment groups. Left, middle and right column with respectively 1000 × , 2000 × , and 4000 × magnification. Laser groups exhibited a very defined and homogeneous surface patterns, with very high geometrical precision and highly predictable outcomes. Even with 4000 × magnification, none of the groups exhibited mechanical flaws