Butler's Vegetable Restorative Tooth Powder

Image: Le Baume d'Acier by Louis Leopold Boilly. Courtesy of the US National Library of Medicine. BEAUTY, HEALTH, and a PEARLY SET of TEETH, may be preserved to old age, by the use of BUTLER's VEGETABLE RESTORA- TIVE...

Newton's Restorative Tooth Powder

   (Image from Gray's Anatomy, 20th US Edition 1918.) There's a sub-species of urban myth specifically related to "the olden days," and one of its pronouncements is that everyone before about 1950 had appallingly rotten teeth. That's if they were lucky...