With the continuous advancement of cosmetic technology, people are increasingly willing to undergo surgical procedures to correct imperfections. Many individuals with missing teeth opt for porcelain crowns. In fact, there are numerous types of porcelain crowns, with zirconia all-ceramic crowns being one of them. Zirconia all-ceramic crowns are further classified based on their distinct properties. So, what are the different types of zirconia all-ceramic crowns?
I. Alumina All-Ceramic Crowns:
These all-ceramic teeth are manufactured using the slip casting method, where alumina slip is applied to a refractory dental model and fired at high temperatures to form the crown.High-strength and tough zirconia all-ceramic crowns have been successfully applied in aerospace heat shields, Porsche brake discs, and artificial transmission belts. Their strength and toughness far exceed those of other known non-metallic porcelain materials.
II. Zirconia All-Ceramic Crowns:
Zirconia is a mineral found naturally as zircon.The strength of all-ceramic crowns has been significantly enhanced, leading to rapid clinical adoption. Their lifelike aesthetic results astonish dentists, who often struggle to distinguish them from natural teeth. Zirconia all-ceramic crowns are fabricated using the slip casting method: zirconia powder slurry is applied to a refractory dental model and sintered at high temperatures to form the crown.
III. Cast All-Ceramic Crowns:
This method involves creating a wax model of the tooth, followed by high-temperature dewaxing. The prepared ceramic block is then melted and pressure-cast into the ring, completing the all-ceramic crown.Simply put, the casting process involves creating the entire crown from a prepared dental model. Cast all-ceramic crowns offer aesthetic appeal, excellent translucency, and refractive properties similar to enamel, resulting in cosmetic outcomes that closely resemble natural teeth.