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Normal Crowns


Crowns are fixed tooth-shaped prosthetics that can be cemented onto your natural teeth or implants.

At Sabeti Cosmetic Dentistry, depending on the health of your tooth, Dr. Shohreh Sabeti will perform a variety of restorative procedures, including cavity fillings, bonding, root canals, and veneers. In addition to these, crowns are also needed, particularly if your tooth is too decayed or damaged to be fixed by more conservative means.

When are Dental Crowns Needed?


A dental crown may be needed in several situations:
•  To protect and support a weak and badly damaged tooth.
•  To protect a tooth that has undergone a root canal procedure.
•  To cover an implant.
•  To replace a large filling that is failing.
•  To anchor a dental bridge.
•  To create a cosmetic modification.

Types of Dental Crowns


At Sabeti Cosmetic Dentistry, we use several different types of dental crowns.

Gold Crowns


Gold is the strongest, most durable, and most malleable material for dental crowns. Gold is hypoallergenic, does not break down, and is known to last for up to 40 years. Most people prefer gold crowns in their back teeth because of the metallic color, and because they can withstand a huge biting force.

Base-Metal Crowns


Base-metal crowns like cobalt-chromium or nickel-chromium crowns are also very strong and durable. They also require a very little amount of tooth structure to be eroded. Base-metal crowns are also corrosion resistant and work well for back teeth. However, some people may be allergic to certain metals, like nickel, in the crown.

Porcelain-Fused-To-Metal Crowns


PFM crowns are made of a metal interior and a porcelain exterior. These crowns are tooth-colored, but sometimes the underlying metal may show through as a dark line next to the gum line. Because of this, people prefer them for their out-of-sight teeth. Additionally, the porcelain part of the crown may also be prone to chipping, and the crown may erode the opposing tooth.

Ceramic Crowns


Ceramic crowns are the most natural-looking types of crown, though they are not as strong as metal-based crowns. Porcelain crowns are preferred only for front teeth as they cannot withstand high bite pressure and because they are highly resistant to stains.

Composite Resin Crowns


Composite resin crowns are also tooth-colored crowns that can be used to restore front teeth. These crowns are the weakest type and do not last as long as metal or even porcelain crowns. However, they cost the least out of all these types of crowns.

Problems With Dental Crowns


If a crown is not made of high-quality material or not placed properly, it can lead to a few problems:
•  Increased Sensitivity: If a tooth that has been crowned still has a live nerve, it may be painful immediately after the procedure. If the pain comes when you bite down on the crown, this means the crown is seated too high on the tooth. If that’s the case, call us so that we can reposition it.
•  Chipped Crown: Although metal crowns do not have this problem, porcelain and composite resin crown are prone to chipping. If the chip is small, a composite resin mixture is used to fix the defect. In case of a larger chip, we may need to replace your crown.
•  Loose Crown: A crown can become loose if the cement under the prosthesis washes out. This not just makes the crown fall off. It also provides a gateway to bacteria to infect the tooth.
•  Allergies: You may suffer from allergic reactions, like soreness, due to certain materials used to make the crown. For example, some people are allergic to nickel. However, this kind of case is rare.
•  Dark Line Next to the Gumline: You may see a dark line above your gum line if you are wearing a porcelain-fused-to-metal crown. This is the underlying metal showing through. If it is in your back teeth, it is of no concern. If, however, you are wearing the crown on your front teeth, you may need to replace it with a porcelain or resin crown.

A crown can last for 15 to over 40 years, depending on the material it is made from and on your oral care.

A dental crown is one of the best ways to restore a badly damaged tooth without resorting to more invasive procedures. If you think you may need a crown, contact us at (213) 314-0636 to schedule a visit.

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