Abstract: Provided is a dental floss that keeps cleaning performance thereof on one hand, and that is easy to handle because of a high rigid portion thereof on the other hand. Dental floss includes: a floss part that is formed by twisting a plurality of filaments together but not tying up the filaments; and tied-up parts that are provided continuously with the floss part, and are formed by tying up the plurality of the filaments, wherein each of the tied-up parts is formed in such a manner that filaments are covered with a contour part in a cross section thereof.

Abstract: To provide a toothbrush having fully workable long bristles on the top end for easily brushing even a comparatively flat face without making a hardly hit part and without up-and-down movement influenced by recessions and projections of bristle bunches on the rear side, all of the bristle bunches on the rear side comprise mixed bristle bunches of long and short bristles, lines connecting respectively bristle top ends of the long and the short bristles are approximately parallel to a flat planting surface on the rear side, and an effective height of main bristles on the top end of the head is higher 1 mm or more than the height of the line connecting the bristle top ends of the short bristles on the rear end, and is higher than the height of the line connecting the bristle top ends of the long bristles on the rear end.