Components Of Dental Ceramic

Composition of dental ceramics and dental porcelain.

Components of dental ceramic.

The most common ceramics used in dentistry are alloys of 3 main metallic oxides sio2 al2o3 k2o. Dental ceramics are usually referred to as nonmetallic inorganic structures primarily containing compounds of oxygen with one or more metallic or semi metallic elements like aluminum calcium lithium magnesium phosphorus potassium silicon sodium zirconium titanium 1 10. The term dental ceramics comprises a wide variety of materials that reaches from filled glasses to nearly dense sintered ceramics from products that are shaped from powders and melts to components milled from blanks before or after sintering. As example the composition of dental feldspathic porcelain is as follows.

It also acts as a flux lowering the melting temperature of the material. Types and uses of ceramics in dentistry today. Ceramics or porcelains are chemically intimate mixtures of metallic and non metallic elements that allow ionic k2o and or covalent bonding sio2 to occur. Feldspathic ceramics are still common in dental restorations today.

Leucite is created in dental porcelain by increasing the k 2 o potassium oxide content of the alumino silicate glass. Feldspathic ceramics are the oldest of the dental ceramics and are very esthetic but relatively weak. Feldspathic ceramics porcelains are glassy ceramics that form from the combination of feldspar silica and alumina.