This computer numerically controlled (CNC) machine creates dental crowns for patients at an Arizona dental surgery while they wait.<br /><br />Footage captured on June 23 shows the machine in action, using two specialised and oscillating drill bits to forge the dental crown.<br /><br />The filmer said: "This is a CNC milling machine my dentist uses to create dental crowns while you wait. <br /><br />"Normally it takes two appointments to get a dental crown - one to prepare the tooth and take impressions and another to install the crown - but using this, my dentist can do everything from start to finish in one 2-3 hour visit, and no need to wear a temporary crown for weeks."<br /><br />The machine uses 3D scanning technology to build a digital model of a patient's tooth and then that data is used as a reference for the milling part of the process, creating a dental crown from one piece of ceramic.