Crowns are dental restorations that are placed over a tooth when other procedures like Bonding or Veneers are simply not enough to restore the damaged tooth. Dental crowns are a popular form of treatment for patients with damaged, broken or worn-down teeth that restore a tooth’s shape and strength, improving the cosmetic appearance of a tooth. Additionally, crowns can protect teeth that have been filled by root-canal treatment. Crowns are permanently cemented to your existing teeth thus requiring the same level of care and attention as your natural teeth. Dental crowns can be aesthetically fabricated to reflect “light” like natural teeth, and mimics the shape, size and colour of the surrounding teeth.
Dental crowns can be made from metal, such as gold, ceramic materials such as porcelain, or a combination of both, known as Porcelain-fused-to metal or ZIRCONIA. Metal dental crowns are usually placed on those teeth that are not overly visible when a person smiles. Dental crowns fabricated from all porcelain possess a translucency that makes them the most cosmetically pleasing of all of the different types of dental crowns. Although they can be very natural in appearance, they lack strength making them the material of choice for front teeth, due to chewing and biting forces exerted on these teeth. Porcelain-fused-to-metal dental crowns can be a good choice for either front or back teeth as they are a hybrid of porcelain and metal.
Therefore, they will provide an aesthetically looking crown with sufficient support to withstand the natural biting forces, but they are not aesthetically as good as ZIRCONIA. Moreover there are chances of porcelain chipping and wearing out over a period of time when metal starts showing up. Therefore, ZIRCONIA crown is preferable crown instead of porcelain fused to metal. Metal in the crowns irritates the gum margin and over a period of time the gum recedes and the metal margin appeared on gum line.