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S. mutans viability presented as numbers of CFU in a logarithmic scale of selected concentrations of NH and AH. The viability of the 50% NH-treated sample was almost zero. Horizontal lines, means and SEs of the TSB control; error bars, SEs; asterisks, significant differences (P ≤ 0.05) from the TSB control; boxed concentrations, significant difference between NH and AH groups for a specific concentration.
