Durability and Strength
One of the most significant advantages of zirconia blocks is their durability and strength. Zirconia is a very hard and strong material, which makes it ideal for use in dental restorations such as crowns, bridges, and implants. Unlike other materials like porcelain or acrylic, zirconia can withstand high pressure and force, making it less likely to chip or break.
Biocompatibility and Aesthetic Appeal
Another advantage of using zirconia blocks is their biocompatibility and aesthetic appeal. Zirconia is considered a bioinert material, which means that it does not react with the body's tissues or fluids. This makes it an ideal material for dental restorations, as it is less likely to cause allergic reactions or other adverse effects.
In addition to its biocompatibility, zirconia also has an aesthetic advantage. With advancements in zirconia technology, manufacturers can now produce zirconia blocks in various shades and translucencies that closely mimic the appearance of natural teeth. This makes zirconia an excellent choice for patients who desire a restoration that looks and feels like their natural teeth.
Resistance to Corrosion and Wear
Zirconia blocks are also resistant to corrosion and wear. Unlike metal restorations, which can corrode over time and cause further damage to the surrounding teeth and gums, zirconia does not corrode or react with fluids in the mouth. This means that zirconia restorations can last longer without requiring replacement.
Compatibility with CAD/CAM Technology
Finally, zirconia blocks are compatible with CAD/CAM (computer-aided design/computer-aided manufacturing) technology. This means that dental laboratories can use computer software to design and fabricate a restoration from a zirconia block. This results in a more precise and accurate restoration, with less room for error than traditional methods of fabrication.
How Zirconia Blocks are Used in Dental Laboratories
Zirconia blocks are typically used in dental laboratories to fabricate dental restorations such as crowns, bridges, and implants. The process begins with a digital scan of the patient's mouth, which is used to create a 3D model of the restoration. The 3D model is then sent to a milling machine, which uses a diamond bur to carve the desired shape out of a block of zirconia.
After the restoration has been milled, it is then sintered, or fired in a furnace, to strengthen the material. Once the restoration has been sintered, it can be customized to match the patient's natural teeth by adding shading and translucency.
Zirconia blocks can also be used for full arch restorations, where an entire arch of teeth is replaced with a fixed prosthesis anchored on dental implants. In this case, the entire arch can be designed using computer software and manufactured from a single block of zirconia.
Factors to Consider When Choosing Zirconia Blocks
When choosing zirconia blocks, there are several factors to consider, including the type of zirconia material, block size and shape, and shade and translucency.
The two types of zirconia materials commonly used in dentistry are partially stabilized zirconia (PSZ) and fully stabilized zirconia (FSZ). PSZ is less stable than FSZ and is typically used for anterior restorations, while FSZ is more stable and is used for posterior restorations.
Block size and shape are also important considerations. Dental laboratories need to choose blocks that are appropriate for the restoration they're creating. Additionally, the shade and translucency of the zirconia material must match the patient's natural teeth for the most aesthetically pleasing result.
Potential Disadvantages of Using Zirconia Blocks
While zirconia blocks offer numerous benefits, there are some potential drawbacks to consider. One of the main disadvantages is the high cost of zirconia material compared to other restorative materials. Additionally, there are limited options for customization with zirconia blocks, which could be a concern for patients who want more personalized restorations.
What is zirconia?
Zirconia is a type of ceramic material that's used in dentistry to create restorations like crowns, bridges, and implants.
Is zirconia biocompatible?
Yes, zirconia is biocompatible, meaning it's safe for use in the human body without causing adverse reactions.
How long do zirconia restorations last?
Zirconia restorations have been shown to last up to 15 years or more with proper care and maintenance.
Can zirconia blocks be used for implants?
Yes, zirconia blocks can be used to create implant-supported restorations, providing patients with a durable and long-lasting solution for missing teeth.
What sets Vsmile apart from other zirconia block manufacturers?
Vsmile is a China-based professional zirconia milling disc manufacturer that produces high-quality zirconia blocks at competitive prices. Their commitment to innovation and customer satisfaction has made them a trusted name in the dental industry.