Metal oxide particles having acceptable vehicle orally, the average particle diameter not greater than dentinal tubules, and comprising a polymeric adhesive material for adhering the dentinal tubules in the metal oxide particles, the oral care composition, For example dentifrice composition, is disclosed. And a median particle size of 5 microns or less, the metal oxide particles may comprise zinc oxide. [Selection] Figure Figure 1経口的に許容可能なビヒクル、象牙細管よりも大きくない平均粒子径を有する金属酸化物粒子、及び金属酸化物粒子を象牙細管内に接着させるためのポリマー接着性材料を含む、口腔ケア組成物、例えば歯磨剤組成物、が開示される。金属酸化物粒子は、5ミクロン以下のメジアン粒子径を有し、酸化亜鉛を含んでもよい。【選択図】図1