If you have been told you need a crown, chances are your dentist mentioned a zirconia crown at some point during the conversation. And if you are like most people, you probably nodded along while quietly wondering what on earth zirconia actually is. That’s completely fair. Most of us are not walking around with a working knowledge of dental materials. So, let’s break it down in plain English, because it’s actually worth understanding before you make a decision.
What Exactly Is a Zirconia Crown?
Zirconia, in simple terms, is a type of ceramic material. It’s derived from zirconium dioxide. Dentists have been using it for crowns for a good number of years now, and zirconia crowns have become one of the more popular options available, particularly for people who don’t want anything metallic showing when they smile.
Monolithic zirconia crowns are typically milled from a solid zirconia block, usually with the help of a CAD/CAM machine, which means the crown is designed digitally and then cut to precision. Whether that results in a precise fit every time is something that can vary depending on the intraoral scan accuracy, dental team and the technology they are working with, but generally speaking, the process is fairly reliable. Monolithic variants are useful for the back teeth because of their exceptional strength and durability. In contrast, layered zirconia crowns are coated with ceramic to form a life-like translucency. Layered zirconia crown is mainly used for the front teeth.
Why Do People Choose Zirconia Over Other Materials?
There are a few reasons people tend to lean towards zirconia crowns, though it really does depend on individual circumstances.
Strength is probably the most talked-about benefits. Zirconia is exceptionally hard, which makes it a solid choice for back teeth that take on a lot of chewing pressure. If you are getting a crown on a molar, your dentist will often suggest zirconia for this reason alone.
Appearance is another factor, particularly for people who are conscious about how their teeth look. Unlike older metal-fused-to-porcelain crowns, which sometimes showed a dark line near the gum, zirconia crowns tend to blend more naturally with surrounding teeth. That said, some patients feel that the colour match isn’t always perfect, so it’s worth discussing this with your dentist beforehand.
Biocompatibility is something that comes up fairly often as well. Zirconia is generally considered to be well-tolerated by the body, and people with metal sensitivities or allergies often find it to be a more comfortable option than metal-based alternatives.
