Cosmetic crowns, also known as porcelain teeth, are what the people usually call braces. Generally speaking, the following four steps are used in the production of porcelain teeth: 1, grinding: it means grinding the natural teeth in a small circle to leave space for porcelain teeth; 2, taking a mold: before sending to the processing plant, the doctor should make a record of the condition of the teeth to provide a basis for the production of porcelain teeth; 3, color: this step is very important to ensure that the production of porcelain teeth and the original teeth or adjacent teeth are similar in color. The doctor will compare the color of the original teeth of the affected teeth and determine a rough shade on the colorimetric plate; 4, bonding: when the porcelain teeth production is completed, after debugging, trial wear, and finally can do on the bonding.