On January 26, 1875, the first electric dental drill was patented George Green, a development that revolutionized dentistry.
Humans have been drilling teeth since over 9000 years. In recent times, mechanical hand drills were used. In 1868, Green invented a pneumatic dental drill powered with pedal-operated bellows.
Publication number: US171121 A
Patent Title: Improvement in electro-magnetic dental pluggers
Publication type: Grant
Publication date: 14 Dec 1875
Filing date: 5 Aug 1873
Inventors: Geobge F. Gbeen
Original Assignee: Samuel S