Human oral retention of zinc from mouthwashes containing zinc salts and its relevance to dental plaque control

Subjects using 30 mM zinc phenolsulphonate as a mouthwash retained 12 per cent of the zinc. Salivary zinc concentration was increased by using mouthwashes containing 17-35 mM zinc as the sulphate, phenolsulphonate or citrate. For 17 mM zinc sulphate or phenolsulphonate, the effect lasted 3-4 h. Zinc...

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