Ideal Properties Of Dental Ceramics

Two physical properties in particular are used to assess the clinical performance of today s dental ceramics.

Ideal properties of dental ceramics.

Part i an overview of composition structure and properties. Jithendra babu 1 rama krishna alla 2 venkata ramaraju alluri 1 srinivasa raju datla 1 anusha konakanchi 3. Tanja lube robert danzer in advanced ceramics for dentistry 2014. Introduction ceramic is defined as product made from non metallic material by firing at a high temperature.

Dental restorative materials are used to replace tooth structure loss usually due to dental caries dental cavities but also tooth wear and dental trauma on other occasions such materials may be used for cosmetic purposes to alter the appearance of an individual s teeth. There are many challenges for the physical properties of the ideal dental restorative material. The wear between ceramic dental restorations and the adjacent tooth enamel generates another type of defect on the surface of restorations that can be well characterized by sem. Dental porcelain also known as dental ceramic is a dental material used by dental technicians to create biocompatible lifelike dental restorations such as crowns bridges and veneers evidence suggests they are an effective material as they are biocompatible aesthetic insoluble and have a hardness of 7 on the mohs scale.

Wear is mainly determined by the friction properties and the micro topography of the restoration porcelain. Their properties vary over a wide range. 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. The concern that a ceramic will fracture in service remains a problem for ceramic alloy and all ceramic restorations alike although the newest crystalline ceramics see figure 14 3 are beginning to challenge this notion.

For certain dental prostheses such as three unit molars porcelain. 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. They also remain stable over long time periods. The properties of ceramics are customized for dental applications by precisely controlling the types and amounts of the components used in their production.

Thermal properties are similar to those of enamel and dentine disadvatages high hardness abrasion to antagonist natural dentitions and difficult to adjust. 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. 1 department of prosthodontics vishnu dental college bhimavaram west godavari andhra pradesh india.