A planar oral care patch (300) is provided. The planar oral care patch (300) comprises a first split (304) stretching along a first direction (404) in a central region (400) of the planar oral care patch (300) so that the planar oral care patch (300) can be folded as a three-dimensional shape. An oral care patch tape (600) having a plurality of the planar oral care patch (300) is provided. A method of using the planar oral care patch, a method of treating an oral disease and a method of prophylactically treating an oral disease by using the planar oral care patch are also provided.
