It is better to choose a gold alloy for a porcelain tooth. Porcelain dental terminology is called porcelain fused to metal full crown, in the production process will first make the metal inner crown, and then build up the porcelain powder on the outside of the inner crown, and finally sinter the porcelain powder into the crown, so the inside of the porcelain tooth is actually metal. This metal is the material you can choose, common porcelain teeth material cobalt chromium alloy and titanium alloy, as well as gold alloy, these alloys have their own advantages and disadvantages, but the comprehensive judgment down or gold alloy material is the best. Because gold alloy is malleable, after wearing a gold alloy porcelain crown, it will fit the tooth very well. In addition, the color of gold alloy is yellowish, which is closer to the color of the crown, and the aesthetic effect is better after wearing it. If it is titanium alloy or cobalt chromium alloy, its color is metal color, after wearing cobalt chromium alloy or titanium alloy porcelain crowns, if the usual cleaning is not in place, after a few years, the gums will turn black, revealing the color of the metal crown inside. Therefore, in terms of ductility and biocompatibility, gold alloy is the best choice for porcelain teeth. In fact, with the progress of technology, currently in the clinical ceramic teeth less and less, the most commonly done or all-porcelain teeth, that is, without metal crowns.