An all-ceramic tooth, also known as an all-ceramic crown, is a porcelain restoration that covers the entire crown surface and does not contain a metal inner crown. Because the inner crown is no longer made of metal, but is made of high-strength porcelain material similar to the color of the tooth, it is more beautiful than the metal-based porcelain restoration, the translucency is similar to that of natural teeth, and the gingival edge after restoration is more natural, which can achieve simulation effect, and has the advantages of no stimulation to the surrounding tissues, which has been widely used in clinical practice, especially in the aesthetic restoration of anterior teeth.