GOLD, CERAMOMETAL or ALL-PORCELAIN CROWNS When a tooth has a large cavity or has been treated by a root canal, the structural integrity of that tooth is compromised. A crown may be necessary to save that tooth with the least amount of problems long-term. When discussing the type of crowns available to be placed, there are options to be considered.
A Full-Gold Crown:
This is a great option and considered ‘The Gold Standard’ due to longevity and prognosis. The margins that seal the tooth are very thin and protect the crown from leakage and resulting decay. With gold, there no very little chance of fracture, and the biting surface wears extremely well over time. For areas that are not visible, this is the treatment option of choice.
On back teeth where aesthetics are and issue, porcelain crowns with a gold substructure are the treatment of choice. The gold structure underneath the porcelain adds strength and yet provides a great seal around the edges of the crown thereby preventing leakage and thus cavities underneath. These restorations are very natural looking and are proven to be long lasting.
These crowns are the best aesthetic option. A white zirconium substructure supports the porcelain, and helps to prevent porcelain fracture. Nobel Biocare Procera crowns are manufactured using a high-tech optical scanner and converted to an electronic file and transmitted to a manufacturing facility. Once the substructure is milled, it is returned to our laboratory technician who then adds the aesthetic porcelain. The only caveat for these restorations is the marginal gap which is much larger than their gold or ceramo-metal counterpart.