The application of ceramic materials for the fabrication of dental restorations is a focus of interest in esthetic dentistry. During the past decade, zirconia-based ceramics have been successfully introduced into the clinic to fabricate fixed dental prostheses.

Zirconia is widely used to build prosthetic devices because of its good chemical properties, dimensional stability, high mechanical strength.

On the other hand, its white color, similar to the color of natural teeth, makes it useful in esthetically important areas of the oral cavity, and its ability to transmit light renders it a suitable material in esthetic restorations.

There is no anaesthetic grey line visibility compared to that of conventional metal-based ceramic crowns.

Zirconium crowns are known to grant an absolutely natural look to the crowns which makes them a favourite of the cosmetic as well as dental patients. Many times, it is difficult to differentiate between the zirconium crowns from the natural teeth.

The ability to select metal-ceramic crowns for color or strength for single units or fixed partial dentures gives great flexibility, but when esthetics of the anterior region are a prime concern, the zirconia crowns are still an excellent choice.

The options for the restoration of edentulous areas with fixed dental prostheses have changed with the introduction of new ceramic materials. Zirconia-based ceramics have been clinically available as an alternative to the metal framework for fixed dental prostheses.

Development of both casting gold alloys and precision dental casting technologies has contributed to the application of metallic prostheses. However, because of the recent demand from patients for esthetics and biosafety, metal-free prostheses have been desired. Both new dental materials and new processing technologies are required to meet these patient demands to zirconia.

Natural looking dental restorations require appropriate materials selection, form, surface texture, translucency, and color.

Zirconia offers mechanical advantages over other full ceramic dental restorations largely owing to the potential for transformation toughening.

Thanks to their growing awareness of esthetics and biocompatibility, patients increasingly request metal-free solutions.