回复：在国内装烤瓷牙的朋友进来讨论一下：有毒金属镍铬医疗安全问题

Don't know much about cases back in China. However, the best option for front teeth would be all porcelain veneers or all porcelain crowns. This way you won't have allergic/toxic reactions to some of the metals in the normal porcealin-fused-to-metal (PFMs) and you won't have a dark/blue shadow along the gum later on.

Good luck.