Zirconia Crown
A Durable Solution with Few Concerns
Zirconia crowns are a popular dental restoration choice known for their durability and natural appearance. In this article, we’ll explore common issues that patients might encounter with zirconia crowns, the different types available, and the materials used in creating these sturdy dental restorations.
Zirconia Crown Problems
Zirconia crowns are generally well-regarded for their many advantages, but like any dental restoration, they are not without potential concerns. Here are some common zirconia crown problems to be aware of:
Fractures:
While zirconia crowns are highly durable, they can still be susceptible to fractures, particularly if they are exposed to excessive force or trauma. However, this risk is relatively low compared to other crown materials.
Wear on Opposing Teeth:
Zirconia is a very hard material, and in some cases, it can cause more wear on opposing teeth than natural teeth or other dental materials. Regular dental check-ups are essential to monitor the health of surrounding teeth.
Aesthetics:
While zirconia crowns are known for their natural appearance, there may be concerns about their translucency and lifelike appearance, especially in comparison to porcelain crowns. However, recent advancements have improved the aesthetics of zirconia crowns.
It’s important to note that these concerns are relatively minor and can often be mitigated with proper dental care, regular check-ups, and adjustments by your dentist.
Types of Zirconia Crown
Zirconia crowns come in several types, each with its unique characteristics and applications. The two primary types of zirconia crowns are:
Full Contour Zirconia Crowns:
These crowns are made entirely of zirconia and are known for their high strength. They are an excellent choice for posterior teeth that require durability to withstand the forces of chewing. While they are strong, they may not offer the same level of translucency as other options.
Porcelain-Fused-to-Zirconia (PFZ) Crowns:
PFZ crowns combine the strength of zirconia with the aesthetics of porcelain. The zirconia substructure provides robust support, while the porcelain layer on top offers a more natural appearance. PFZ crowns are often preferred for front teeth where aesthetics are a significant concern.
The choice between these types depends on the specific tooth, the patient’s needs, and the dentist’s recommendations.
Zirconia Crown Materials
Zirconia crowns are primarily made from zirconium dioxide, a biocompatible material known for its strength and resistance to corrosion. However, there are different types of zirconia materials used in dental restorations:
Traditional Zirconia:
This type of zirconia is robust and durable, making it an excellent choice for crowns intended for posterior teeth. It is less translucent than other zirconia materials, but advancements have improved its appearance over the years.
High Translucency Zirconia (HTZ):
HTZ offers improved aesthetics, making it a suitable option for anterior teeth. Its increased translucency allows for a more natural appearance while still maintaining the strength of zirconia.
Super Translucent Zirconia (STZ):
STZ is a relatively new addition to the zirconia family. It provides even higher translucency, making it a top choice for achieving lifelike aesthetics, particularly for front teeth.
In summary, zirconia crowns are a durable and reliable choice for dental restorations. While there are concerns related to fractures and wear on opposing teeth, these issues are generally minor and manageable with proper dental care. Zirconia crowns come in different types, allowing patients and dentists to select the most suitable option for their specific needs. Understanding the materials used in zirconia crowns can help patients make informed decisions about their dental restorations.