| 摘要 |
The present invention provides an oral care composition for encouraging proper tooth cleaning, comprising particulate materials which are breakable under a brushing action with a brushing force from 0.1N to 5N, wherein the particulate materials have a particle size distribution characterized by (1) a change ratio of mean particle size before and after the brushing action is at least 20%, (2) a change ratio of D90 before and after the brushing action is at least 20%, (3) at least 5% of the particulate materials have a particle size greater than 200um before the brushing action, and (4) no more than 30% of the particulate materials have a particle size greater than 200μιη after the brushing action, and wherein the oral care composition has a viscosity ranging from 10 to 90 BKU. |
