Abstract: A dental sanitary appliance includes a toothbrush housing forming a frontal portion, a floss housing forming a middle portion of the dental sanitary appliance and a floss fastening member is insertable into the floss housing and incorporates a cover cap mountable on the rear end of the floss housing. The toothbrush housing has a toothbrush member and a chamber for accommodating a floss roll. The floss housing has a central passage in open communication with the chamber and a stopper attached to the upper wall of the rear portion of the central passage. The floss fastening member is movable in the central passage and includes a rod, a slit formed longitudinally on the top of the rod and a U-shaped frame member coupled to the rear end of the rod. The stopper can extend into the bottom of the slit when the rod is pushed longitudinally so as to terminate the outward movement of the rod.