5 EASY FACTS ABOUT DENTAL DRILLS DESCRIBED

The main mechanical dental foot engine was built by John Greenwood in 1790. It had been encouraged by a foot-run spinning wheel. A clockwork-sort dental drill was invented in 1864 by British dentist George Fellows Harrington. Whilst getting considerably quicker than prior drills, it was also extremely noisy.The Lexicon Extendo Bur is made for deep