This collection contains high-resolution scans and documentation regarding dental hygiene at the turn of the 20th century. In 1909, the "modern" toothbrush was still decades away from the invention of nylon, meaning most items in this archive reflect the era of natural materials and early mass marketing.
Documentation of "Sozodont" and other tooth powders that preceded the smooth toothpastes we use today.
Original 1909 Prophylactic Tooth Brush ads, which were among the first to be sold in individual packaging to emphasize "sterilization".