| 摘要 |
<p>Dental compositions to inhibit the adherence and plaque and/or stains on teeth comprise one or more water-soluble block copolymers of polyoxyethylene/polyoxypropylene which have a structure with the polyoxypropylene block being sandwiched between two polyoxyethylene blocks together with an acidic poly-amino acid or an alkali metal salt thereof.</p> |
