To use a cotton roll stably, hardly to slip off, safely and comfortably without pain of the gum in a mouth by bending both sides of a wire bent to be U-shaped at right angles seen from the side, and bending both tips thereof at right angles.

Both sides of a wire bent to be U-shaped is bent at right angles in a side view, and both tips thereof are bent. In using this cotton roll clip 1, the cotton roll 2 is inserted in both sides from both tips first, and turned twice to three times. Secondly, the cotton roll 2 is stabilized with a tooth clamped in the middle from both sides. At this time, a wire is put in the cotton roll 2 and fibers are wound round the right-angled parts of both tips to hardly slip off. Thus, the wire is kept from directly coming into contact with the gum so that it can be used safely and comfortably.