Ceramic crowns are made in a dental laboratory according to the patient’s dental impression and the model of his prepared teeth. Today, the most widely used materials for making crowns are IPS Empress or IPS e.max non-metal ceramics, zirconia-ceramics (zirconium oxide-ceramics) or full zirconia.
Ceramic crowns fabricated from full, non-metal ceramics are the most beautiful dental crowns, as they perfectly imitate the natural translucence of a tooth. Natural tooth color affects the choice of the crown color.
These crowns are the best choice for those allergic to metals.
Regarding the composition of the material, there are several types of ceramic crowns:
- Feldspathic porcelain – classic and the most beautiful, it is used exclusively for making veneers
- Reinforced glass-ceramics – leucite-reinforced (Empress), lithium-disilicate-reinforced (IPS e.max Press, IPS e.max CAD) and glass-reinforced ceramics (In Ceram Spinell, In Ceram Alumina). These materials are used to make inlays, onlays, dental veneers and ceramic caps and they are all made using CAD-CAM technology (Computer Aided Design – Computer Aided Manufacture).
- Aluminum oxide and zirconium oxide non-metal ceramics – some of the strongest types of non-metal ceramics. They are suitable for producing crowns and bridges in the back region of the mouth, which is exposed to stronger masticatory forces. Such crowns include the Nobel Procera Alumina, Nobel Procera Zirconia, IPS e.max ZirCAD and Lava Zirconia. They are also produced using CAD-CAM technology.
BENEFITS OF CERAMIC CROWNS:
- Transparency and translucence of the natural tooth, maximum esthetics
- No allergic reactions, high degree of biocompatibility and reduced sensitivity
- Ability to correct the position, shape and color of teeth
LIMITATIONS OF CERAMIC CROWNS:
- Complex and time-consuming tooth preparation
- Relatively expensive
- Strong chewing can lead to chipping and breaking