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Protective effects of the Dual Zinc plus Arginine aqueous solution, the Dual Zinc plus Arginine dentifrice, and the regular fluoride dentifrice on the paracellular permeability of gingival keratinocytes to FITC-dextran 4 (FD-4) compromised by P. gingivalis. Results are expressed as the means ± SD of triplicate assays. *, significant decrease (p < 0.05) compared to P. gingivalis-stimulated cells.
