My 10 year old self can just imagine seeing the Blech-o-dent parodies in Mad magazine.
Tobacco Stained Teeth Instantly Whitened New Safe Way
No need now for yellow, discolored, spotted, tobacco-stained teeth. Bleachodent Combination costs just a few cents and removes unsightly stains in three minutes at home. Leaves teeth white, lustrous, clean and flashing. Recommended everywhere as quicker, surer, safer than old-fashioned scouring methods which injured the enamel.