There are two reasons for toothache after making porcelain teeth: 1, the original tooth decay was not handled well, and now it causes pulpitis pain; 2. Gingival atrophy occurred in the position of porcelain teeth, which led to the joint between porcelain teeth and gums no longer sealed, thus causing periodontitis pain (usually accompanied by gingival bleeding and bad breath). This situation should be treated in time.