What percentage of nickel is typically found in base metal PFM copings?

Base metal porcelain-fused-to-metal (PFM) copings typically contain a significant percentage of nickel, as it's one of the primary components used to enhance strength and compatibility with porcelain. The correct range of nickel content often found in these copings is 70-80%. This higher percentage allows for adequate mechanical properties while providing a surface suitable for porcelain bonding.

Nickel not only contributes to the strength of the coping but also plays a role in achieving a certain aesthetic quality once the porcelain is fused. While there are variations based on specific formulations and alloys, the 70-80% range widely reflects the standard compositional makeup of these types of base metal alloys used in dentistry. This is why the selection of this percentage is aligned with typical findings in material specifications for PFM copings.