With old technology, dental crowns always needed to be made with a metal foundation. Today, we can make them out of pure porcelain, ceramic or aesthetic reinforced resins. There are still occasions on the back teeth when the durability of a metal crown makes it the restoration of choice.
The utilization of bonded ceramic restorative materials is intended to reestablish function, shape, contour, color (hue, value and chroma), natural light transmission and strength of natural dentition.
Individually colored tooth restorations can be reproduced in exact shape and shade. The result is an individually fabricated restoration with an excellent fit and all the characteristics of a natural tooth. Even when working in limited space, optimum aesthetic results can be obtained.
The system produces crowns, inlays/onlays and veneers, providing one of the strongest all-ceramic restorations available. The restoration is modeled in wax and invested in a specially formulated investment. The system's furnace then allows the restoration to be pressed in leucite reinforced ceramic porcelain. After removal, the object is finished to the required aesthetic and anatomical specifications, using staining and layering techniques.
As for every all-ceramic system, the presence of a metallic post and core is not advisable, because of the shadow effect or the grayness of the substructure that inevitably results after cementation. This can be overcome by having the post and core fabricated in a ceramic metal, and a ceramic opaque fired to it. This is a two-step procedure with very pleasing results.
In the case of several single crowns or laminates, the same color is strongly recommended for all preparations. To enhance the mechanical properties of this glass ceramic, the prosthetic restoration must be luted with an adhesive technique, using the latest generation dental adhesive. The composite cement must be chosen carefully to maintain the aesthetic properties of the all-ceramic restorations.
A Crown made by Metal-Ceramic
The same crown made by Zirconia Ceramic BENEFITS TO PATIENTS
- Near optimum esthetics
- Excellent fit
- Excellent strength
