Dr. John Greenwood was born in Boston, Massachusetts May 17,1760. He is credited with being the first to use a "Foot Drill" made out of an old spinning wheel and having inaugurated the use of flat or round springs for holding upper and lower plates in position.
THE ARTIFICIAL DENTURES WORN BY GEORGE WASHINGTON WERE MADE BY JOHN GREENWOOD ABOUT 1792.
John Greenwood's first foot drill inspired the great advance in Dental Equipment that evolved today's beautiful high speed drills.
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