What is a key characteristic of monolithic zirconia crowns compared to layered crowns?

• A. They always require a veneer porcelain layer
• B. They are a single material without veneer porcelain
• C. They are less strong than layered crowns
• D. They require extra chairside adjustments due to veneer

Answer: (B)

Monolithic zirconia crowns are milled from a single block of zirconia and do not have a veneer porcelain layer. This single-material construction eliminates the outer veneer, which reduces the risk of chipping and typically gives greater strength and durability compared with layered crowns. The other options don’t fit because there isn’t a veneer layer in monolithic crowns, they are not weaker due to the lack of veneer, and there isn’t an inherent need for extra chairside adjustments caused by veneer since there’s no veneer to fit or adjust.