What is Zirconium?
Zirconium (ZrSiO) belongs to the group of silicate minerals and was discovered in 1789. Zirconia (ZrO2) is a constituent of the zirconium element found in nature. In fact, it has been used in dental medicine for over 15 years.
WHAT IS THE ZRONIC DIOXIDE CROWN?
There are two types of zirconium crowns - one made entirely of zirconium dioxide (in full contour), and the other zirconium serves as a base on which a layer of ceramics is applied.
Zirconia crowns in full contour are extremely strong, but their aesthetic qualities are not good because they transmit light very slightly and have an unnatural appearance. Therefore, they are preferred to the rear teeth, which are not visible with speech and smile.
In zirconium-ceramic crowns, zirconium serves as a base, similar to the metal base in metal-ceramics. Ceramics are applied to it to achieve the desired aesthetic result.
With the combination of zirconium and ceramics, an exceptional aesthetic result is achieved and greater than metal-ceramic crowns. Professional zirconia-ceramic crowns and bridges are virtually indistinguishable from natural teeth.
Comparison of zirconium crowns and bridges with metal-ceramics
Zirconia has a bending force of about 1000-1400 MPA, while the metals used in metal ceramics have about 500-700 MPa, ie. zirconium is about 2 times more durable than metal. The zirconium base is 100% biocompatible and does not cause allergies, does not irritate the gums and does not cause it to shine, unlike the metal base of metal ceramics. Zirconium can achieve excellent aesthetic results that are not achievable with metal-ceramics.
Zirconium crown (left) and metal-ceramic crown (right), viewed from the inside.
In conclusion, metal-ceramic crowns and bridges have no advantage over zirconium, except for a price that is about two to three times lower.
A clinical case from our practice
In this case, we made three zirconium crowns in the area of chewing teeth.