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Dr. James Morrison's Dental Drill, 1871. The first electric dental drill was devised and patented by Dr. George Green in Kalamazoo, Missouri in 1875. The drill could reach speeds up to 3,000 rpm but it took 25 to 30 years before dentists made the switch from pedal-driven to electric belt driven drills. George Green, Morrisons, Belt Drive, Kalamazoo, Floor Fan, Oral Health, Dentists, Novella, Drills