Glass Ceramic Dental Restorations

Survival of restorations of different types and with different methods of preparation was described by using kaplan meier survivor functions.

Glass ceramic dental restorations. 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. A glass ceramic containing li 2 o cao al 2 o 3 sio 2 platinum and nb 2 o 5 is disclosed. Addition of coloring additives and devitrification. In the case of the bilaminate crown the high strength zirconia coping is veneered with hand stacked or milled nanofluorapatite glass ceramic.

1984 dentsply international york pa usa. The original type of all ceramic was the porcelain jacket nowadays instead of porcelain it s much more likely that an engineered compound is used. Ips e max dental restorations. For certain dental prostheses such as three unit molars porcelain.

4 dicor was first available as a castable glass ceramic ingot for manufacture in the lab using the lost wax technique and later also as a. The aesthetic qualities of natural teeth may be reproduced by proper control of processing parameters e g. The flexural strength of this material ranges from 900 mpa to 1200 mpa. The design and performance parameters of ceramic materials in dental restorations are reviewed.

A total of 1444 dicor glass ceramic restorations were placed on the teeth of 417 adults. Systems such as feldspathic porcelains leucite systems castable glasses alumina based systems and glass infiltrated alumina are covered as are the different types of restorations eg veneers inlays etc. They are of two broad types direct and indirect and are further classified by location and size. Just as their name implies all ceramic dental crowns are restorations whose full thickness is made entirely of a glass like substance such as porcelain.

It is highly suitable for use in dental restorations because of its combination of castability chemical durability and mechanical strength. Failure was defined as a restoration that required remake because of material fracture. Made by ivoclar vivadent ips e max for crowns bridges onlays inlays and veneers is a lithium disilicate glass ceramic that has optimized translucency durability and strength.