Study on the effect of chlorogenic acid on the antimicrobial effect, physical properties and model accuracy of alginate impression materials

All alginate impression materials mixed with either 10 mg/mL, 15 mg/mL, or 20 mg/mL concentrations of CA solution met the ISO 21563 standard for elastic recovery, strain-in-compression, and fluidity. However, only the material mixed with a concentration of 10 mg/mL CA had an initial setting time within the range specified by the T-6505 Japanese industrial standard. The application of CA solution by mixing or spraying showed significant antimicrobial effects on <i>Staphylococcus aureus, Escherichia coli, Candida albicans,</i> and <i>Streptococcus pneumoniae</i>. There was no significant difference in the dimensional accuracy of the alginate impressions between the group of the CA solution applied, the blank group, or the chlorine intervention group.