5 SIMPLE TECHNIQUES FOR DENTAL DRILLS

The 1st mechanical dental foot motor was designed by John Greenwood in 1790. It had been motivated by a foot-powered spinning wheel. A clockwork-type dental drill was invented in 1864 by British dentist George Fellows Harrington. Whilst becoming considerably quicker than earlier drills, it was also incredibly noisy.The Lexicon Extendo Bur is create