When it comes to dental crowns, there is a wide range of materials to choose from. One of the most common choices is metal. Metallic crowns have been used in dentistry for many years, thanks to their strength, durability, and biocompatibility. In this article, we will explore the different types of metals used in dental crowns and discuss their characteristics, advantages, and potential drawbacks.
1. Gold Crowns
Gold crowns have been a popular choice in dentistry for decades. They are made from a gold alloy, which typically contains a mixture of gold, copper, and other metals. Gold crowns offer excellent durability and biocompatibility. They are resistant to corrosion and are less abrasive to the opposing teeth compared to other metal crowns.
Gold crowns are known for their aesthetics as well. They provide a natural-looking appearance due to their gold color. However, their high cost is a significant drawback for many patients. On average, a gold crown can range from $800 to $2,500.
Despite the high cost, gold crowns are highly durable and can last for many years. They require minimal tooth preparation, making them a suitable option for those with limited tooth structure.
2. Porcelain-Fused-to-Metal (PFM) Crowns
Porcelain-fused-to-metal (PFM) crowns are another popular type of dental crown. They consist of a metal core (usually made of a non-precious metal alloy) coated with a layer of porcelain. The metal core provides strength and durability, while the porcelain outer layer offers an aesthetically pleasing appearance.
PFM crowns are versatile and can be used for both front and back teeth. They provide a natural-looking smile while maintaining excellent functionality. The shade of the porcelain can be customized to match the patient's natural teeth, ensuring a seamless blend.
However, there are a few drawbacks to PFM crowns. The porcelain layer can wear over time, causing the metal core to become slightly visible. Additionally, the metal core may cause a dark line to appear near the gumline, which can be noticeable in certain situations. The cost of a PFM crown ranges from $800 to $1,500.
3. Base Metal Alloy Crowns
Base metal alloy crowns are made from non-noble metals, such as nickel, chromium, and cobalt. They are known for their exceptional strength and resistance to corrosion. Base metal alloy crowns require minimal removal of tooth structure, preserving more natural tooth material.
These crowns also offer excellent biocompatibility and are suitable for patients with metal allergies. They are highly resistant to fracture and provide long-lasting results.
Due to their affordability and durability, base metal alloy crowns are a popular choice for many patients. On average, they cost between $800 and $1,200. However, one potential disadvantage of these crowns is their grayish color, which may not be as aesthetically pleasing as other options.
4. High Noble Metal Alloy Crowns
High noble metal alloy crowns contain a high percentage of noble metals, such as gold, platinum, or palladium. These metals offer exceptional biocompatibility and corrosion resistance. High noble metal crowns are highly durable and can withstand the forces of biting and chewing.
These crowns provide a natural-looking appearance due to their gold or silver color. However, they are often more expensive than other types of metal crowns. On average, high noble metal alloy crowns range from $800 to $2,500.
It's important to note that the prices mentioned throughout this article are approximate and can vary depending on various factors, such as the location of the dental practice and the complexity of the case.
Frequently Asked Questions
1. Are metal crowns safe?
Yes, metal crowns are considered safe and have been used in dentistry for many years. They are biocompatible and well-tolerated by the body.
2. How long do metal crowns last?
Metal crowns, when well-maintained, can last between 10 and 15 years or even longer. Regular dental check-ups and proper oral hygiene are essential for extending their lifespan.
3. Can I choose the type of metal for my crown?
Yes, the type of metal used for your crown can be chosen based on your specific needs and preferences. Your dentist will evaluate your case and recommend the most suitable option.
References:
1. American Dental Association.
2. Colgate.
3. WebMD.
