Zirconia Crowns/Solid is a superior kind of all-ceramic crown because of its supreme strength and high durability which is worn to improve the appearance of a tooth that has been stained or disfigured over time. They are handy to wear, long-lasting and are constructed from a very robust material which is suitable with the human body which makes them more popular at present. Zirconium dental crowns play a crucial role in restorative and cosmetic dentistry as they provide both the combination of mental stability and aesthetic appearance. They are majorly used to corroborate cracked or broken teeth, mask a severely stained or misshapen or shapeless tooth and restore a dental implant. Full contour zirconia crown, without a porcelain overlay consist of virtually chip-proof durability and also its glassy soft surface and force makes it best choice for people who’ve damaged or broken teeth or current dental restorations. 

The two major kinds of zirconia dental crowns are: 

• Monolithic zirconia crowns: The solid zirconia or monolithic restoration typically contains zirconium oxide, a substance that interprets it virtually unbreakable. This type of crown is an extremely sort of strong ceramic that resists breaks, chips and stains manufactured from a single material for the fully anatomic replacement of lost tooth structure.They are somewhat opaque but can be color matched to your existing teeth perfectly and because of its opacity, the monolithic restorations are set in the back of the mouth.
• Layered zirconium crowns: The layered restorations are made with layered lithium disilicate ceramic over the top of the coping. The layered porcelains offer them a realistic clarity which is required for restorations in the front of the mouth.The top layered ceramic is made in the same way as for ips e.max (versatile high-strength, metal-free) versions. All these versions are made of sturdy covers overlain with layers of soft reflective porcelain. The process in which the ceramist fabricates the cap influences its solid strength and aesthetics to create the beautiful restorations that can be made by a skilled master ceramist. This layered version tends to be more vulnerable to chipping when compared to PFM crowns as the pretty porcelain has more possibility of chipping easily.

Advantages of zirconia crowns.

• Zirconia is a biocompatible material, its smooth surface helps to reduce plaque accumulation and has a flexural strength of 1200 mpa. 
• These crowns are extremely comfortable and are suitable for patients with metal allergies or who would like to have metal-free restorations. 
• It is widely manufactured in various color shades and its translucent nature of this material to transmit the color of adjacent teeth to match the patient’s natural teeth accurately. 
• Due to numerous factors, which includes chemical composition and processing requirements, there are various ways in which zirconia can be manufactured to suit the requirements of the patient to ensure the excellent fit and minimizes the margin for error for each individual. 

Disadvantages of zirconia crowns 

Just as other dental procedures, there are minimal disadvantages in getting a zirconia dental crown. There is a concern about the material’s toughness that causes friction against the tooth root and wearing down of opposing teeth. However, the possibility of damaging opposing teeth can be reduced with frequent check-ups. Initially, only the bone-white substructures could be produced for zirconia dental crowns, which sometimes creates problems in achieving an aesthetically pleasing appearance. 

The most common reasons for requiring a zirconia dental crown include: 

• cracked, fractured, chipped or broken 
• A tooth having a large filling 
• You’ve had a recent root canal 
• A dental implant was placed and has been healed