Composition Of Dental Ceramics

Divided into two parts such as part i and ii.

Composition of dental ceramics. Part i reviews the composition structure and properties of dental ceramics from the literature available. Divided into two parts such as part i and ii. Principal crystal phase or matrix phase processing method casting sintering partial sintering glass infiltration slip casting and sintering. Dental ceramics can be classified in a number of different ways including by their composition processing method fusing temperature microstructure translucency fracture resistance and abrasiveness.

1 for the purposes of this article the term ceramic is used to include all metal free restorations generally all ceramic restorations have been confined to the anterior region until. Over the last decade it has been observed that there is an increasing interest in the ceramic materials in dentistry. The most common ceramics used in dentistry are alloys of 3 main metallic oxides sio2 al2o3 k2o. Dental ceramics are nonmetallic inorganic structures primarily containing compounds of oxygen with one or more metallic or semi metallic elements aluminum boron calcium cerium lithium magnesium phosphorus potassium silicon sodium titanium and zirconium.

Dental ceramics may have some luminescence characteristics in common with domestic porcelain although the composition of the former generally differs from that of domestic porcelain having a high proportion of feldspar 80 versus 15 relative to kaolin 15 versus 70 to achieve translucent quality bailiff et al 2002. Esthetically these materials are preferred alternatives to the traditional materials in order to meet the patients 39. Part i reviews the composition structure and properties of dental ceramics from the literature available in pubmed and other sources from the past 50 years. Ceramics or porcelains are chemically intimate mixtures of metallic and non metallic elements that allow ionic k2o and or covalent bonding sio2 to occur.

Dental ceramics are mainly composed with crystalline minerals and glass matrix. Composition of dental ceramics and dental porcelain. Crystalline minerals include feldspar quartz and alumina and perhaps kaolin as glass matrix 1 10 11. This article is a review of dental ceramics.

Several modifications have been made in ceramics in order to address this quandary. Many dental ceramics contain a crystal phase and a silicate glass matrix phase. For certain dental prostheses such as three unit molars porcelain. The detailed composition of dental ceramics was discussed in table 2.