This modern technique is based on the 3D laser measurement for the tooth image or the prepared molar then gets transmitted onto the computer. And in turn it appears on the screen therefore the dentist uses a smart computer program to add some details to the required crown and the computer shows the final shape of the crown and the dentist can make any modification during this stage. Then, the dentist chooses a rectangular part of the ceramic material which is put inside the device proportioning to the size of the crown or the bridge and the dentist also chooses the suitable color according to the patient's teeth color, then the computer gives orders to a very accurate reduction device next to the computer to reduce and polish the chosen shape on the computer. Finally, we get the crown or the bridge according to the exact dimensions that have been photographed in the mouth.