Abstract: This invention is concerned with an improvement of a tooth brush for keeping users' decayed teeth and gingival portion in a hygeine and healthy condition comprising a grip portion of a tooth brush shank to be held between their thumb and first finger with respect to their lower jaw and upper jaw, which shank being formed intermediate thereof in an opposedly inclined shape so as to enable them to cleanly brush their tooth especially cased with gold and also whole gingival surface area by a finger massage operation. The invention further involves a construction wherein the grip portion of tooth brush shank is provided rearwardly with a projection which is adapted to press against the gingival portions thereby enabling users to perceive the seat of gingivitis at an earlier stage by feeling pain when the projection is applied to their gingival portion.