PFM

Porcelain Fused to Metal

Although an older technique in crown fabrication, PFM’s serve its purpose when all other options have been exhausted. Porcelain is fused to a metal substructure consisting of various types of alloys including: high noble, noble (semi-precious) or non-precious. 

Indications

• Anterior and posterior crowns

• Bondable maryland bridge

Strength

• 100 MPa flexural strength on exposed porcelain areas

Benefits

• Strong substructure

• Versatile

• Alloy options include high noble, noble (semi-precious) or non-precious alloy

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: 2mm

• Facial/Lingual Reduction: 1.5 mm

• Cervical Reduction: 1.2 mm

Cementation

• Standard cementation materials and technique

• Bonding requires tin plating