My dentist is recommending 4 porcelain fused to metal crowns for my front teeth. I need to verify what I was told about the metal for the crowns. So, what kind of metal is used? And is this black line that some people have near the gumline caused by the metal? Thanks for your input. – Mark C., Salinas
Mark – Porcelain-fused-to-metal crowns contain two basic metal types. One type is noble metal, which includes gold, platinum and palladium. Noble metals have a more accurate fit, are less likely to corrode and are less likely to cause sensitivity. The second metal type is base metal—nickel and chromium.
Based on the metal type, the crowns are classified as porcelain fused to high noble, porcelain fused to noble or porcelain fused to base metal.
After several years, the metal will show at the gumline, and it appears as a dark line. There are ways to make the line less visible, but it will still exist.
All-porcelain crowns will not produce a dark line near the gums. And the crown itself will more closely resemble the color and translucency of natural teeth. If you choose all-porcelain crowns, find a cosmetic dentist who places them. Requesting them from a dentist who is more comfortable placing porcelain-fused-to-metal crowns can leave you with an undesirable result.
This post is sponsored by San Jose cosmetic dentists Drs. Suzanna and Trinh Lee of Mountain View.