Which restorative approach reduces veneer requirements because it is milled from a single block?

Which restorative approach reduces veneer requirements because it is milled from a single block?

• A. Layered ceramic
• B. PFM
• C. Full gold
• D. Monolithic zirconia

Answer: (D)

When a restoration is milled from a single block, it’s designed as a monolithic piece with no separate veneer layer. Monolithic zirconia fits this exactly: it’s produced by CAD/CAM milling a single block of zirconia into the final crown, so no veneering porcelain is needed. This eliminates the need for a veneer layer, reducing veneer-related failures and simplifying fabrication. Layered ceramic and PFM rely on a veneer layer over a core, and full gold is a solid metal approach that doesn’t involve a ceramic veneer, so they don’t meet the single-block milled criterion.

When a restoration is milled from a single block, it’s designed as a monolithic piece with no separate veneer layer. Monolithic zirconia fits this exactly: it’s produced by CAD/CAM milling a single block of zirconia into the final crown, so no veneering porcelain is needed. This eliminates the need for a veneer layer, reducing veneer-related failures and simplifying fabrication. Layered ceramic and PFM rely on a veneer layer over a core, and full gold is a solid metal approach that doesn’t involve a ceramic veneer, so they don’t meet the single-block milled criterion.