Description

metal-ceramic crown, also known as porcelain fused to metal (PFM) crown, is a dental restoration that combines the strength of a metal substructure with the aesthetic appearance of a ceramic outer layer.​ Structure and Materials The core is made from a metal alloy, which can be: Precious metals (such as gold, platinum, or palladium) Semi-precious metals (like gold mixed with other alloys) Non-precious metals (such as stainless steel or cobalt-chromium alloys) This metal base is then layered with tooth-colored ceramic porcelain, creating a double-layered crown designed for both durability and appearance.​ Benefits Strength and Durability: The metal core provides robust support, making these crowns suitable for back teeth where bite force is high.​ Aesthetic Flexibility: The ceramic outer layer offers a natural look, especially suitable for visible areas, though the metal underneath may sometimes cause a dark shadow near the gum line.​ Versatility: They are used for both front and posterior teeth, including restorations over dental implants and for supporting bridges.​ Uses and Limitations Ideal where both strength and aesthetic qualities are needed, especially in regions subjected to heavy chewing forces.​ Not recommended for patients with metal allergies or in situations where very high esthetic requirements are critical (such as in the front teeth with high cosmetic demands) if the metal margin might be visible.​ Price and Considerations More expensive than non-metal crowns, with prices varying depending on the type of metal alloy used.​ The preparation involves detailed impression-taking and laboratory fabrication, ensuring a precise fit and finishing.​ Summary A metal-ceramic crown offers a combination of strength, longevity, and aesthetics, making it a popular choice in restorative dentistry for various teeth, especially posterior molars and premolars where durable function is essential.​