What is the reason why porcelain teeth suddenly appear vertical lines, and the surface is still smooth? How to treat it?
Look at the picture. You should have done this porcelain tooth for some time. These changes have something to do with your improper care. Usually, don't eat some food that is too cold, hard or too hot, and pay attention to oral hygiene. Or you can go to the attending doctor of porcelain teeth to recheck.
If these vertical lines appear suddenly after the porcelain teeth are finished, it is considered that they have a certain relationship with the material of the porcelain teeth you made at that time, and also with your ordinary care. It is best to go to the attending doctor who made the porcelain teeth at that time for review.