The permitting agencies will help determine what sort of mitigation is needed and possibly provide ideas for how the mitigation obligation might be satisfied. Typically, there are several options. Mitigation Banking: purchasing credits to fund an already existing area of mitigation land.
Teeth whitening history time frame. Barbers were the first to do teeth whitening in 1800s as proven by teeth whitening history. This was done by two methods: filling the teeth down with a steel apparatus and drenching it with nitric acid, which makes the teeth shiny white. Methods to whiten teeth range from a variety of options.
Some other interesting toothbrush facts: 1  The first mass-produced toothbrush was made by William Addis of Clerkenwald, England, around 1780. 2  The first American to patent a toothbrush was H. N. Wadsworth, (patent number 18,653,) on Nov. 7, 1857.3  Mass production of toothbrushes began in America around 1885. About.com-Inventors-Dental Innovations-History of Dentistry-This site discusses the history of the toothbrush and toothpaste, including the first electric toothbrush invented in 1939. 2  Floss.com-This site provides dental trivia and tips as well as information on the origins of toothpaste and floss.