Overview: Porcelain-fused-to-metal (PFM) crowns provide a natural appearance and high strength for dental restorations. These crowns combine a strong metal substructure with an aesthetic porcelain layer that fully covers the metal core.
PFM Material Characteristics and Manufacturing
Dandy manufactures PFM restorations using cast, milled, or 3D-printed selective laser melting (SLM) processes. The construction involves layered materials available in Vita Classical 16-shade options with gold or monochromatic cores.
Available PFM Material Options
Dandy offers four distinct PFM unit types categorized by metal durability (strength) and value:
PFM High-Noble Yellow (Precious): Contains 73% Gold (18 karat).
PFM High-Noble White (Precious): Contains 40% Gold (10 karat).
PFM Noble White (Semi-Precious): Provides balanced durability.
PFM Non-Precious: Offers a base metal solution without noble metal content.
PFM Collar and Framework Specifications
Practitioners can choose from three collar types based on aesthetic and clinical needs:
Porcelain Butt Margin: Porcelain is layered to the base of the crown.
Metal Collar: A visible metal band (180 or 360 degrees) remains at the base.
Junction: Porcelain is layered to the margin with a thin, non-visible subgingival metal collar.
Note: Dandy does not offer metal framework try-ins or bisque bake processes.
PFM Preparation Guidelines
Standardized preparation ensures the longevity of the restoration. Follow these specific measurements:
Margin Type: Shoulder or Chamfer.
Occlusal Clearance: 2.0 mm.
Axial Wall Reduction: 1.5 mm.
Margin Thickness: 1.0 mm.
Material Thickness: 0.5 mm for the core and 1.5 mm for the porcelain layer.
Insurance Billing Codes (ADA)
Use these American Dental Association (ADA) codes for billing and insurance submissions:
D2750: Crown (porcelain fused to high-noble metal).
D2751: Crown (porcelain fused to predominantly base metal).
D2752: Crown (porcelain fused to noble metal).