Zirkoniumdioxid ist als ideale Lösung für die ästhetischen Anforderungen in der Zahnmedizin anerkannt und findet in der klinischen Praxis breite Anwendung. Aufgrund ihrer hervorragenden ästhetischen und biokompatiblen Eigenschaften sind alle Keramikrestaurationen eine metallfreie Alternative. Dieses System nutzt die Konzepte der computergestützten Fertigung (CAD/CAM) für die Herstellung von Keramikkronen und festsitzendem Zahnersatz aus Zirkoniumoxidkeramik. Damit eine Restauration klinisch erfolgreich ist, sind die Randpassung und die Genauigkeit der Restaurationen die entscheidenden...

La zircone a été reconnue comme une solution idéale pour la demande esthétique en dentisterie et son application clinique a été largement utilisée. Toutes les restaurations en céramique constituent une alternative sans métal en raison de leurs excellentes propriétés esthétiques et de biocompatibilité. Ce système utilise les concepts de fabrication assistée par ordinateur (CAD/CAM) pour la fabrication de couronnes en céramique et de prothèses dentaires fixes composées d'un matériau céramique à base d'oxyde de zirconium. Pour que toute restauration soit cliniquement...

The restorative needs for the prosthodontic patient frequently require an increase in occlusal vertical dimension (OVD). This may be due to loss of tooth structure and concomitant loss of OVD, supereruption of opposing teeth into edentulous spaces, or for esthetic reasons. It is often difficult to assess whether OVD has truly been lost. Therefore, it may be prudent to focus on whether alteration in OVD is restoratively acceptable. Another consideration for the alteration in OVD is changes in soft tissue profile. In addition to the correct proportions of the teeth, the relationship of the...

Zirconia has been recognized as an ideal solution for esthetic demand in dentistry and its clinical application has been widely used. All Ceramic restorations are a metal-free alternative due to their excellent aesthetic and biocompatibility properties. This system uses the concepts of computer-aided manufacturing (CAD/CAM) for the fabrication of ceramic crowns and fixed dental prosthesis composed of zirconium oxide ceramic material. For any restoration to be clinically successful marginal fit and accuracy of restorations are the crucial factors. The marginal discrepancy will tend to attract...

Irreversible hydro colloid impression material is routinely used for the purpose of reproducing hard and soft intra oral tissues. The gypsum compatibility and the dimensional accuracy of the cast used to fabricate the cast are crucial for diagnostic and treatment planning purposes. In addition, the fabricated casts are valuable for the purposes of evaluating prosthetic space, diagnostic wax patterns for treatment planning and fabrication of resin based prostheses. Recently, several dental manufacturers have introduced electronic rotary devices to facilitate mixing of irreversible hydro...

Selection for lithium disilicate glass-ceramic (LDGC) restorations have increased significantly in the field of prosthetic dentistry. The material possesses remarkable beauty and strength and is composed of an acicular crystalline material (70%) embedded in a glassy matrix. The translucency, esthetics and successful clinical performance have made LDGC one of the most popular all-ceramic materials. With the increased demand for metal-free restorations, LDGC meets the requirement for a material possessing strong mechanical properties combined with the optical properties of natural teeth....

Venting, axial grooves and provision of axial cement space are methods that have been used to create space between the intaglio surface of crowns and the tooth preparation. The application of paint-on die spacer prior to waxing is the most popular method for providing this space.The use of die spacer can reduce the hydraulic pressure between the cement and restoration; hence it allows better seating of a cast restoration, decreases seating time and allows excess cement to escape.In addition, die spacer has been shown to improve the marginal fit between the restoration and tooth preparation,...