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Dental crowns are tooth-shaped caps that cover a damaged or weakened tooth, restoring its shape, size, strength, and appearance. Porcelain fused to metal (PFM) and porcelain fused to zirconium (PFZ) crowns are two common types with distinct characteristics.
| Porcelain Fused to Metal (PFM) Crowns: PFM crowns consist of a metal substructure, usually made of alloys like nickel-chromium or cobalt-chromium, covered with a layer of tooth-coloured porcelain. | Porcelain Fused to Zirconium (PFZ) Crowns: PFZ crowns have a zirconium substructure, a strong and biocompatible material, beneath the porcelain outer layer. |
| Strength and Aesthetics: The metal core provides strength and durability, while the porcelain outer layer gives a natural appearance, mimicking the translucency of natural teeth. | Strength and Aesthetics: Zirconium is known for its high strength and resistance to fracture. PFZ crowns provide excellent aesthetics due to the translucent quality of both zirconium and porcelain, making them an attractive option for front teeth. |
| Advantages: PFM crowns offer a balance of strength and aesthetics. They are suitable for both front and back teeth, providing durability and a natural look. | Advantages: PFZ crowns offer enhanced strength compared to traditional PFM crowns. They are often chosen for their durability and aesthetic appeal, particularly in situations where both strength and a natural look are essential. |
The choice between PFM and PFZ crowns depends on factors such as the location of the tooth, the patient’s aesthetic preferences, and the specific requirements for strength and durability. While PFM crowns have been a reliable choice for many years, PFZ crowns are gaining popularity for their excellent combination of strength and aesthetics. Your dentist can help determine which type of crown is most suitable for your individual.
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