Dentists, referred to as dentists, have taught people how to protect their teeth and gums since childhood, but their daily work is mostly to treat dental diseases. When a patient has a decayed tooth, the dentist will pull it out and fill it. Sometimes, dentists will pull out the whole tooth and replace it with false teeth.

Dentists, referred to as dentists, have taught people how to protect their teeth and gums since childhood, but their daily work is mostly to treat dental diseases. When a patient has a decayed tooth, the dentist will pull it out and fill it. Sometimes, dentists will pull out the whole tooth and replace it with false teeth.

We can find some rough-filled teeth and ancient dentures from the skulls of early humans. A wooden board found in an ancient tomb built in 3000 BC in Egypt is painted with "Heisili", that is, doctor, dentist or "dentist". /kloc-In 0/400, Henry IV of England appointed Flint as "London Tooth Puller" to treat people with dental problems and gave him sixpence as a reward every day. Tooth extraction is a very painful thing. Sometimes, tooth extraction is still a punishment and the executioner's job.

Before the19th century, the reputation of dentists was not good, and dental skills were not improved until dental schools appeared. 1878, the British government passed a law to ensure that dentists must receive orthodox training. 1872, the United States invented the dental drill for modern dentists. The principle of early dental drills was the same as that of sewing machines. The dentist controls the pedal with his foot to turn the dental drill. The latest dental drill is powered by compressed air or water and can rotate 500,000 times per minute.