It is possible to restore a tooth that is half gone. But it may not only be possible to restore it with a resin filling. After a tooth is half lost, a specific clinical examination should be performed to see if the pulp nerve has been infected and if pulpitis has developed. If pulpitis is present, root canal treatment should be performed to remove the infected pulp nerve before the crown is restored clinically. If the bad area of the crown is relatively large, it is difficult to restore the original shape of the tooth in a particularly fine way by using resin filling, especially for the cusp of the occlusion is often not very good, then usually the tooth can be wrapped on porcelain crowns or all-porcelain crowns in time for restoration. In addition, the tooth can also be restored with inlays, which are processed by the mechanic’s office and can perfectly and delicately restore the bite relationship of the tooth’s cusp, and very well restore the chewing function of the tooth, which is also a method of filling.