Lithium Disilicate Glass Ceramic Crowns

A fitting of the precursor blue glass ceramic lithium metasilicate glass ceramic crown.

Lithium disilicate glass ceramic crowns.

People are conscious about their smile and how they look so lithium disilicate crowns are popular. The purpose of this study was to evaluate the fracture strength of single crowns made of the different types of lithium disilicate glass ceramics. Emax is an all ceramic system that is based on lithium disilicate glass and consists of quartz lithium dioxide phosphoroxide alumina potassium oxide and trace elements. B crown with the same shape but after final heat treatment shaded and glazed and cemented as lithium disilicate glass ceramic with dental color of the final product.

Emax based all ceramic prostheses are rapidly gaining widespread popularity in cosmetic dentistry due to their excellent esthetics durability and strength. 8 10 with its relatively low refractive index outstanding optical properties such as translucency. Lithium disilicate has found applications in dentistry as a material for crowns in the form of li 2 si 2 o 5 lithium disilicate has an unusual microstructure that consists of many randomly oriented small and. Lithium disilicate glass ceramic ldg provides desirable mechanical properties chemical resistance biocompatibility diminished plaque accumulation accuracy of fit esthetics as well as wide indications including thin veneers inlays onlays crowns fixed dental prostheses in the anterior and premolar region and implant superstructures.

Benefits of lithium disilicate. Lithium disilicate glass ceramic ips e max cad crown exhibits higher fatigue load to reach the failure value than the zirconium oxide crown y tzp 14. This innovative ceramic provides highly esthetic results and compared to other glass ceramics demonstrates a strength that is 2 5 to 3 times higher. Lithium disilicate li 2 si 2 o 5 is a chemical compound that is a glass ceramic.

4 55 reprinted from höland w beall gh. 8 9 this unique crystalline structure enables size shape and density to be controlled allowing for greater strength and durability. Lithium disilicate ls2 glass ceramic is ideally suitable for the fabrication of monolithic single tooth restorations. A study published by the journal of clinical diagnostic research concludes that compared to other ceramics lithium disilicate had the best translucency which is an important factor to consider for esthetics.

Lithium disilicate glass ceramic contains approximately 70 by volume needle like crystals in a glassy matrix.