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Qualitative morphological scanning electron microscopic (SEM) micrographs of Porphyromonas gingivalis on control (Ctrl) titanium (Ti) discs and on Ti discs after erbium, chromium-doped yttrium, scandium, gallium, and garnet (Er,Cr:YSGG) laser treatment. These images illustrate the growth of bacteria and show relatively fewer bacteria on the Er,Cr:YSGG laser–treated discs. Magnification, 2000 times; scale bar = 20 μm.
