WHAT ARE ZIRCONIUM CROWNS
We are all familiar with the many smiley quotes we encounter that are meant to motivate one another. A smile can go a long way in expressing oneself. This unparalleled importance to an individual’s smile is very closely intertwined with one’s oral hygiene. Therefore it is prudent that we become aware of the various dental processes available to us. One such dentistry technique that will be discussed here is on zirconium crown. Before we jump right into what zirconium crown is, we need to cover our basics. So let’s start with what a crown is. Crown is nothing but the part of the tooth which is visible and covered with enamel. Now, for varying reasons one’s teeth can be damaged or decayed, in such a circumstance a synthetic tooth is used to cover the damaged or decayed tooth. The synthetic covering is called crowns and sometimes it’s also referred to as ‘caps’ as they cover the top portion of the tooth. These synthetic crowns or caps are available in gold, ceramics, porcelain etc. There are two categories of crowns:
dental crowns: used in dental problems
cosmetic crowns: used to improve the aesthetics of the tooth.
The materials used in crowns mainly depend on two qualities:
good strength and durability
Unfortunately, there is no such material that satisfies both these qualities fully. One should note here that gold crowns are the strongest but they may not be aesthetically pleasing. And then again the ceramic crowns are preferred for aesthetic reasons, however, they are found to be fragile and prone to breakage. For now, zirconium is the closest material that possesses the two qualities mentioned earlier.
Zirconium crowns are made of zirconium oxide or zirconia. The zirconium used in dentistry is stabilized with the addition of yttrium oxide. Zirconium basically is a very hard white ceramic that comes in the form of solid blocks. In order to obtain the right sizes and shape it makes use of advanced computer systems (CAD/CAM systems).
Zirconia is biocompatible, making it safe to be used within the body. Because of which one needn’t worry about any adverse allergic reactions. Zirconia is known for its durability making it ideal for crowns, especially in posterior crowns that require strength for chewing and grinding food. When compared to other conventional crowns, zirconia crowns don’t have any grey line visibility. The good news is it’s hard to distinguish zirconium crowns amongst natural teeth. Because of its physical qualities, zirconium crowns have gained immense popularity in cosmetic dentistry.
There are two types of zirconia: solid and high translucent. Both of them are made using the CAD/CAM technology. CAD stands for Computer Aided Designing and CAM stands for Computer Aided Manufacturing. Because of the technologies, the crowns are very precise.
- Tougher and can withstand chewing forces better
- suits root canal treated teeth, by offering stronger support to weak teeth.
- suited for posterior/ back teeth
High translucent zirconia
- suited for anterior/ front teeth