Is it okay to use cast porcelain for incisors? Today, I went to have my teeth inserted, and the doctor introduced three kinds, alumina and zirconia and cast porcelain. Both of them are too expensive, and I need to do them. All cast porcelain teeth are called cast ceramic crowns, which are also called all-ceramic teeth. It is a new full crown prosthesis in recent years, made of a new castable ceramic material, which is superior to metal porcelain teeth in appearance and biological performance. The biggest difference between them is the inner crown. The inner crown of cast porcelain teeth is porcelain, which is a transparent skeleton without metal substrate.

Due to the different materials, the cast porcelain teeth and the porcelain teeth are essentially different, showing the following excellent performances:

1. Transparency: This is an impossible task for porcelain, because the opaque metal crown requires opaque porcelain to cover the metal base, which affects the transparency of the restoration, making the porcelain look obviously chalky, pale and false, and there is a "black line" caused by the metal base at the neck of the tooth. Cast porcelain solves this cosmetic problem with a high-strength inner crown with good transparency and refraction, so that the tooth neck can also achieve good aesthetic effect. 2, gingival health: Nickel-chromium metal, also known as base metal, has a serious irritation to the gums, and some people (especially women) are allergic to it, causing gingival swelling and bleeding, and even some patients are allergic to precious metals; No sensitive cases were found in cast porcelain.

3. gingival discoloration: base metal oxidizes in the mouth to form gray oxide, which is scattered and deposited on the edge of the gum, causing the gum to turn gray and affecting the appearance; Cast porcelain has no such problem.

4. Combination of internal and external crowns: The combination of metal and porcelain is a weak link, and it is often seen that porcelain and metal peel off, exposing gray-black metal. Cast porcelain because the inner and outer crowns are porcelain, and the combination of porcelain and porcelain is definitely the best.

5. The hardness of porcelain crown is greater than that of enamel, which may cause abrasion to jaw teeth. However, the hardness of IPS Empress porcelain is similar to enamel, and it wears synchronously with the opposite jaw teeth.

6. There is no metal interference, which has no influence on the possible CT nuclear magnetic resonance examination in the future.

7. In special occasions (discos, dinners, etc.), there will be no abnormal blue light.

Disadvantages of cast porcelain teeth: The amount of real tooth tissue to be removed by cast porcelain teeth is more than that of porcelain crowns, otherwise the porcelain layer is too thin and easy to break. The strength of cast porcelain teeth is not as high as that of porcelain teeth. Generally, it is only used for single crown, inlay, high inlay and veneer restoration of anterior teeth, but not for posterior teeth restoration.