How Do PFM Crowns Affect Metal Allergies?


What are PFM Crowns?

Porcelain fused to metal (PFM) crowns are made up of metal alloys that are covered in a thin layer of porcelain for a neat aesthetic appearance.

First invented in the 1960s, PFM crowns are used to protect teeth that have been restored after sustaining considerable damage or decay. The crown is cemented directly over the natural tooth structure to encase and protect it. Porcelain fused to metal crowns are typically fabricated from base metal alloys such as cobalt, beryllium, nickel, and chromium. They are also commonly made up of titanium and gold alloys. In some cases, they may be made up of stainless steel.

PFM crowns are often seen in patients and they have been known to last. . However, they are known for after some time, the porcelain is chipped or worn through and the metal can be exposed. Also many people do not like the dark line of the metal that can be visible along the gumline.  These crowns are also not esthetic.  All porcelain crowns can allow for translucency like natural teeth. However, the metal underneath these PFM crowns can give a more “flat” color and matching natural teeth is difficult. They new generation of all porcelain crowns are just as, if not more durable, strong and long lasting

Can PFM Crowns Cause an Allergic Reaction?

It’s currently estimated that over 30% of the population struggles with allergies to metals. While the overall health implications of allergic reactions to metal crowns are still being clinically examined, there have been some rare cases in which PFM crowns have caused an allergic reaction.

What is most important to first consider is that everybody is different; what one person’s body may adjust to, another person’s body may reject or react negatively to. If you know that you have an allergy to metals, or if you are concerned that you might, be sure to mention this concern to your dentist prior to having your PFM crown placed in the mouth. If you are not sure, It’s best to opt for a full porcelain crown. 

If it is determined that you are indeed experiencing an allergic reaction from the metal materials in your PFM crown, you will then need to discuss your options for removing the crown and replacing it with a non-metal option.

Willow Glen Dental Center: Dental Crowns in San Jose

For the most comprehensive dental crown services in San Jose, CA, trust in Willow Glen Dental Center.

For more information about PFM crowns or to get scheduled for an appointment in our San Jose dentist’s office, give us a call anytime at (408) 266-6144.

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