A oral care composition includes: (a) a hydrophilic film-forming polymer； and (b) a hydrophobic carrier, wherein the hydrophilic film-forming polymer is a film-forming polymer effective to occlude dentinal tubules and the oral care composition contains 0-10 wt.% water. The hydrophilic film-forming polymer is preferably GANTREZ S. The hydrophobic carrier is preferably a vegetable oil. A method of cleaning teeth includes applying to the teeth the oral care composition such that the hydrophilic film-forming polymer occludes dentinal tubules. A toothbrush includes: a handle； a head mounted to the handle, the head comprising an outer surface and a plurality of tooth cleaning elements extending outwardly from the outer surface； and a gelatin capsule containing the oral care composition positioned on the head.一種口腔保健組成物，包括：(a)一親水性成膜聚合物；及(b)一疏水性載劑，其中該親水性成膜聚合物為有效閉塞牙本質小管之成膜聚合物，且該口腔保健組成物含有0-10重量%水。該親水性成膜聚合物較佳地為GANTREZ S。該疏水性載劑較佳地為蔬菜油。一種清潔牙齒之方法，包括將該口腔保健組成物施用於牙齒，使該親水性成膜聚合閉塞牙本質小管。一種牙刷，包括：一把手；一掛接握把之接頭，該接頭具有一外表面和多數個由外表面向外延伸的牙齒清潔元件；及置於接頭上，含該口腔保健組成物的明膠膠囊。
