Which type of porcelain is known for being resistant to etching with hydrofluoric acid?

In-ceram porcelains are specifically formulated to exhibit high resistance to etching with hydrofluoric acid. This characteristic is particularly important in dental applications because it implies that the material maintains its integrity and aesthetic quality even when exposed to substances that might typically degrade other types of porcelain.

In-ceram technology involves a layered structure that combines specific glass and ceramic phases, contributing to its durability and resistance to certain chemical reactions, including etching. This makes it suitable for various dental restorations, as it provides strength and allows for reliable finishing and bonding processes.

The other types of porcelains listed may not exhibit the same level of resistance to hydrofluoric acid. For instance, stackable porcelains are often used to achieve a better aesthetic result but may not provide the same chemical resilience. Pressable porcelains, while offering good strength and aesthetic qualities, can be more susceptible to etching compared to in-ceram porcelains. Stripped porcelains might refer to those designed for specific esthetic applications but do not generally possess the unique chemical properties that in-ceram porcelains have.

In summary, the exceptional resistance of in-ceram porcelains to hydrofluoric acid not only enhances their functional performance in clinical settings but also contributes to their