An 18th-century American and British toothpaste recipe called for burnt bread. Another formula around this time called for dragons blood (a resin), cinnamon, and burnt alum.[26] Sensodyne toothpaste Tooth Paste History; By 1900, a paste made of hydrogen peroxide and baking soda was recommended for use with toothbrushes. Pre-mixed toothpastes were first marketed in the 19th century, but did not surpass the popularity of tooth-powder until World War I. In 1892, Doctor Washington Sheffield of New London, CT manufactured toothpaste into a collapsible tube, Dr. Sheffields Creme Dentifrice. He had the idea after his son traveled to Paris and saw painters using paint from tubes. In York in 1896, Colgate & Company Dental Cream was packaged in collapsible tubes imitating Sheffield. The original collapsible toothpaste tubes were made of lead.[27][28] Fluoride was first added to toothpastes in the 1890s. Tanagra, containing calcium fluoride as the active ingredient, was sold by Karl F. Toellner Company, of Bremen, Germany, based upon the early work of chemist Albert Deninger.[29] An analogous invention by Roy Cross, of Kansas City, Mo., was initially criticized by the American Dental Association (ADA) in 1937. Fluoride toothpastes developed in the 1950s received the ADAs approval. To develop the first ADA-approved fluoride toothpaste, Procter & Gamble started a research program in the early 1940s. In 1950, Procter & Gamble developed a joint research project team headed by Dr. Joseph Muhler at Indiana University to study new toothpaste with fluoride. In 1955, Procter & Gambles Crest launched its first clinically proven fluoride-containing toothpaste. On August 1, 1960, the ADA reported that Crest has been shown to be an effective anticavity (decay preventative) dentifrice that can be of significant value when used in a conscientiously applied program of oral hygiene and regular professional care. The amount of fluoride in toothpastes varies from country to country: toothpaste in the UK and Greece typically contain more fluoride than US toothpaste, with toothpaste sold in Greece typically containing 1,450 ppm F.
Posted on: Fri, 07 Mar 2014 15:39:08 +0000
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