Hello, according to your situation, there should be gingivitis after dental plastic surgery. The causes of gingivitis are inaccurate porcelain teeth, poor sealing of the edge of porcelain crown, or direct compression of gum by the edge of crown, which leads to irritation, redness and bleeding. This kind of porcelain tooth is beyond repair. I suggest you find a professional dentist to check it out, remove the original porcelain teeth, and then do some anti-inflammatory treatment of gingival inflammation. After about 1-2 weeks, prepare new teeth and make new porcelain crowns for restoration.