Porcelain gum swelling, the following treatment is required, if the porcelain tooth cervical edge is too long, pressure on the gums caused by severe swelling and pain need to remove the porcelain tooth, again dental preparation, gingival row after making a clear impression, the production of new porcelain crown for trial wear, not to stimulate the gums before bonding. If more adhesive is retained in the neck of the porcelain tooth, the excess material needs to be carefully scraped in the gingival sulcus, rinsed with 3% hydrogen peroxide solution and placed in iodine glycerin to promote anti-inflammation. If the x-ray shows periapical inflammation of the abutment teeth and a large amount of inflammatory secretions causing swelling of the gums, it is necessary to grind away the porcelain teeth on the coronal surface, remove the infected pulp, and close the cavity with composite resin after completing the root canal treatment.