3. Because the common porcelain crown is made of Ni-Cr alloy, metal elements will be released after 3-5 years of repair, which will color local soft and hard tissues.
4. Inadequate preparation of the porcelain crown and shoulder platform leads to the compression of the gingiva, which makes the gingiva ischemic and darkens.
Fifth, the preparation depth of the prosthesis edge is insufficient. Although the prosthesis itself is well prepared, the color of discolored teeth or nickel-chromium alloy post and core is exposed through the marginal gingiva.
If porcelain teeth fail, German 3D crown technology is preferred.
The German 3D beauty crown technology introduced by Tianjin Oufei Fine Tooth Beauty Center is the best permanent tooth cosmetic restoration method at present. Germany's 3D beauty crown orthodontic technology, using the latest digital technology, accurately analyzes your tooth shape and symptoms, and then adopts Germany's 3D digital positioning system. Professional cosmetic dentists design a tooth beauty plan for you, and the corrected teeth are beautiful and generous.