Feldspathic Porcelains Overview

Type of dental porcelain containing a glass matrix and crystal phases, often used in dental restorations.

Silicon Dioxide (SiO2), the primary component of feldspathic porcelains, forming the glass matrix.

Aluminum Oxide (Al2O3), another key component of feldspathic porcelain, contributing to strength and durability.

Feldspar's transformation into leucite crystals when heated, affecting the thermal expansion of the porcelain.

Process where a material melts to form a liquid and a different crystalline material, crucial for leucite formation during porcelain sintering.

Potassium-aluminum-silicate mineral with a high thermal expansion coefficient, formed during the melting of feldspar.

Porcelain type designed for low-temperature firing, often used for final layers in dental crowns.

Special porcelain used to build up the shoulder area of a dental crown, requiring a lower firing temperature.

Porcelain used to create a thin, opaque layer on a dental crown to mask the metal beneath.

Liquid glass containing metal oxides, used to create a smooth and glossy finish on dental restorations, often applied after the base porcelain layer.

This is the tendency of a material to scratch or wear down another material, often measured by how much it wears down tooth enamel.

Ceramics (especially those used in restorations) can damage opposing tooth enamel through contact and wear. This issue is particularly relevant when dealing with exposed opaque porcelain.

The process of introducing water molecules into the structure of glass, altering its properties. This is often employed in dental ceramics to lower the firing temperature and increase thermal expansion.

The process of forming a thin layer on the surface of a material, typically through chemical reactions with the environment. In dental ceramics, this layer can be used to enhance the properties of the material and make it more resistant to wear.

The temperature at which a material transitions from a rigid solid to a more fluid state. This is crucial when considering ceramic firing processes.

The ability of a material to resist deformation under stress. This is particularly important in dental applications, where materials must withstand forces during chewing and biting.

These are low-fusing ceramics specifically designed to be compatible with metal-ceramic prosthetic restorations. Their unique properties allow for use with certain low-expansion metals.

The difference in size of a material at different temperatures. This property is crucial in dental ceramics to ensure proper bonding and prevent cracks or chipping.

A type of ceramic that contains very small particles. These particles contribute to the unique optical properties of the ceramic, making it appear more translucent and vibrant.

These are dental ceramics that aim to be less abrasive to opposing tooth enamel. They typically contain a high proportion of glass and small crystal particles, minimizing wear on the enamel surface.