What is the sequela of incisors made of porcelain teeth?

If the incisors do metal porcelain teeth, the most obvious sequela is that the gingival edge of the tooth shows discoloration. metal porcelain teeth contain metal inside, after wearing, metal ions will slowly dissociate into the gingival tissue, making the gingival tissue slowly show black color change. And with the extension of time, the blackening will become more and more obvious. In addition, with the extension of time, metal ions will slowly penetrate into the porcelain powder on the surface, making the tooth color slowly black and yellow. Therefore, it is generally recommended to repair the incisors at this stage in the clinic, and try to choose all-ceramic crown repair.