Abstract: A toothbrush includes an elongate body having a handle and a head formed with bristle assemblies each including elastic upper and lower boots on either side of an intermediate layer, an elastic collar extends through the intermediate layer from the lower boot to the upper boot, a tuft of bristles bound by a coupling, the tuft of bristles extends from the coupling in the lower boot through the collar and through the upper boot and therebeyond to a brushing extremity, the upper boot provides lateral elastic compliance between the upper boot and the tuft of bristles through the upper boot, the lower boot provides lateral elastic compliance between the lower boot and the coupling in the lower boot, and the intermediate layer pinches the collar against the tuft of bristles through the collar elastically retaining the tuft of bristles through the elastic collar to the elastic collar.

Abstract: A toothbrush includes an elongate body having a handle and a head formed with bristle assemblies each including elastic upper and lower boots on either side of an intermediate layer, an elastic collar extends through the intermediate layer from the lower boot to the upper boot, a tuft of bristles bound by a coupling, the tuft of bristles extends from the coupling in the lower boot through the collar and through the upper boot and therebeyond to a brushing extremity, the upper boot provides lateral elastic compliance between the upper boot and the tuft of bristles through the upper boot, the lower boot provides lateral elastic compliance between the lower boot and the coupling in the lower boot, and the intermediate layer pinches the collar against the tuft of bristles through the collar elastically retaining the tuft of bristles through the elastic collar to the elastic collar.

Abstract: A toothbrush includes an elongate body having a handle and a head formed with bristle assemblies each including elastic upper and lower boots on either side of an intermediate layer, an elastic collar extends through the intermediate layer from the lower boot to the upper boot, a tuft of bristles bound by a coupling, the tuft of bristles extends from the coupling in the lower boot through the collar and through the upper boot and therebeyond to a brushing extremity, the upper boot provides lateral elastic compliance between the upper boot and the tuft of bristles through the upper boot, the lower boot provides lateral elastic compliance between the lower boot and the coupling in the lower boot, and the intermediate layer pinches the collar against the tuft of bristles through the collar elastically retaining the tuft of bristles through the elastic collar to the elastic collar.

Abstract: A method of growing jaw bone utilizing a device that can receive a sponge (or other material) that includes or is a substance that stimulates bone growth. The device positions the sponge next to the bone to be regenerated and is preferably a wire mesh partially surrounding the bone to be regenerated. The device defines a cavity having at least one or more openings through which the material may be inserted and thus received in the cavity.