Crowns help to cover decays, severe discoloration, cracks, broken tooth and also helps in restoring the tooth structure after root canal. They improve and restore the overall appearence of the tooth by concealing and reinforcing the flawed tooth structure.
In more recent history metals crowns and porcelain fused to metals crowns have been the popular choices to crown tooth. Higher demand for aesthetic crowns and biocompatibility popularised zirconia crowns over other options.
Zirconia crowns are made from a material which is highly biocompatible with human body and exceptionally durable in logevity. These are least likely to cause any type of allergic reactions and can be safely given to those who have metal allergy as the body will not reject it in any circumstance. They are also strong enough to bear and resist forces generated during chewing and other activities. So that they stand as the best option for posterior areas as they take higher load than others.
Also when it comes to anterior region, zirconia stands in the first position as they perfectly mimic the natural tooth with its attractive translucent color which blends well with other teeth in mouth.
Therefore zirconia is preferred by many people over other options.
Advantages of zirconia crowns: