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(a) Zone of Inhibition (ZOI) produced by PLGA/PEG with varying amounts of silver. Statistical significance was determined within bacteria type (n = 3–5). (b) Cytotoxicity of sealants to L929 mouse fibroblasts (n = 8). Moderate concentrations of AgNO3 (1 mg/mL) produce a high ZOI with no cytotoxicity. Asterisks indicate statistical significance: *p < .05; **p < .01; ***p < .001
