An edentulous mouth insert appliance for mounting upon the edentulous gum of a patient, comprises a u-shaped frame formed of a rigid flexible material, with a portion to embrace the gum and a portion extending beyond the gum with an exposed surface to replicate a bite aligned with the corresponding occlusal plane. The frame has a base supporting a pair of inner and outer side walls spaced apart by the base a distance allowing the frame to encircle and cover the edentulous gum with a space between inner surfaces of the frame and the gum. A fill within the frame fills the space between the frame and the gum upon which the appliance is fitted, providing a void-free seal between the apparatus and the gum.
