Crowns & Bridges
PFM (Porcelain Fused to Metal)
Porcelain over a high noble, noble or non-precious alloy substructure.
Although an older technique in crown fabrication, PFM restorations serve their purpose when other options have been exhausted.
Porcelain is fused to a metal substructure in a choice of alloys: high noble, noble (semi-precious) or non-precious.
Strength
100 MPaflexural strength on exposed porcelain areas
Indications
- Anterior and posterior crowns
- Bondable Maryland bridges
Benefits
- Strong substructure
- Versatile
- Alloy options: high noble, noble (semi-precious) or non-precious
Contraindications
- Not suitable for bruxers or patients with other occlusal dysfunction
- Not recommended for high esthetic demand
- Not recommended for patients with specific alloy sensitivities
Preparation
- Incisal/occlusal reduction: 2.0 mm
- Facial/lingual reduction: 1.5 mm
- Cervical reduction: 1.2 mm
Cementation
- Standard cementation materials and technique
- Bonding requires tin plating
Begin a case.
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