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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
S. mutans viability on (a) untreated, (b) silver-implanted zirconia disks with a nominal dose of 1014, (c) 1015, and (d) 1016 ions/cm2, respectively. (Scale bar is 50 μm).