Materials: These are the forming of gold teeth, they are individually packaged, each one equipped with a hot-melt wax and a corresponding stationary rod reusable, you can see the mold is very delicate, and very shiny, and domestic Some "other channels" of the stores sold is not the same. Gold teeth of our shop are all lead-free nickel-free, FDA-approved (21 CFR 175300), worn in the mouth is very safe.