Why use all-porcelain crowns?
Previously, the most common crowns were porcelain-fused-to-metal (PFM) types which had a metal lining covered with porcelain. These would often have a dark line near the gum where the metal wasn’t entirely covered. If people had a reaction to the metal, sometimes the dark discoloration would even appear on neighboring gum tissue. All-porcelain crowns are the preferred type of crown in use today for this aesthetic reason unless there is strong argument against using an all-porcelain crown. The best benefit is that they appear almost indistinguishable from your natural teeth, due to their translucent quality and custom coloring.
