1. Different wear of the opposing teeth

1. All-ceramic teeth: The hardness of all-ceramic teeth is similar to that of tooth enamel, which can reduce the wear of the opposing teeth.

2. Porcelain teeth: The hardness of porcelain teeth is greater than that of tooth enamel, which will cause wear to the opposing teeth.

2. Maintaining gum health has different problems

1. All-ceramic teeth: There are basically no cases of sensitivity found in all-ceramic teeth.

2. Porcelain teeth: The metal of some porcelain teeth can seriously irritate the gums. Some people (especially women) are allergic to them, causing gum swelling and bleeding. Some patients are even allergic to precious metals. Also allergic.

3. The combination of inner and outer crowns is different

1. All-ceramic teeth: For all-ceramic teeth, the inner and outer crowns are both porcelain. This will not happen with the combination of porcelain and porcelain.

2. Porcelain teeth: The combination of metal and porcelain is a weak link. It is often seen that porcelain and metal peel off, exposing gray and black metal.

Baidu Encyclopedia - All Ceramic Teeth

Baidu Encyclopedia - Porcelain Teeth