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Grooming: History of the Toothbrush

"The ... article on the evolution and analysis of the toothbrush was written by Kyle Sembera, a mechanical engineering senior at Lamar University, Beaumont, Tex., as a final assignment for an elective design class. Sembera=92s toothy research project was inspired by course professor P.R. Corder who, during a recent visit to the dentist, found himself musing on the merits of modern toothbrush design." - from the website. <>