Abstract: The present invention provides an oral care composition for encouraging proper tooth cleaning, containing particulate materials which can be breakable under a brushing action with a brushing force from 0.1N to 5N. The particulate materials can 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 200 ?m before the brushing action, and (4) no more than 30% of the particulate materials have a particle size greater than 200 ?m after the brushing action. The oral care composition can have a viscosity ranging from 10 to 90 BKU.