PURPOSE: To conduct insertion along a space between teeth where an object is pinched and remove obstinate food refuse by specifying the thickness of a filmy body.

CONSTITUTION: As a filmy body (a) has a thinness of 0.05-0.9mm and also a sufficient width, it is deformed by adapting itself easily to a minute opening form between teeth, and food refuse between teeth can be removed naturally. If the thickness is too thick, the cleaning of a narrow space between teeth is difficult, and if too thin, the rigidity of the filmy body (a) must be increased and there is a fear of injuring the gum. This thickness concerns a tip portion, that is, a portion that is inserted into an opening between teeth, and it is not necessary for other portions such as a handle to have the same thickness. The filmy body (a) is the simplest and manufacture is easy. As it is feared that an acute-angled tip may damage the outside and inside of a mouth, formation is made into an appropriate form. The fear of damaging the outside and inside of the mouth is removed by turning a cut section conducted with stamping out into a rounded circular end surface form.