How long do porcelain-fused-to-metal (PFM) crowns last?

Porcelain-fused-to-metal (PFM) crowns typically last 10–20 years with normal use; proper maintenance can further extend their service life. Their longevity is influenced by the underlying tooth condition, fabrication technique, and daily occlusal habits. If chipping, loosening, or gingival swelling and pain occur, prompt dental evaluation and possible replacement are necessary.

PFM crowns are fixed prostheses custom-fabricated to match natural teeth, restoring both dental morphology and occlusal function via an internal metal substructure and an external porcelain layer. Individuals with healthy, stable abutment teeth and favorable gingival conditions—and whose occlusal forces are evenly distributed—experience slower crown wear. Conversely, inflammation of the abutment tooth or uneven occlusal loading accelerates porcelain wear and compromises marginal integrity, thereby shortening the overall service life.

When marginal leakage, localized porcelain fracture, or recurrent gingival inflammation occurs, the existing restoration must be promptly removed. After treating any underlying abutment tooth inflammation, a new restoration should be fabricated. For patients with severely compromised abutment teeth, a post-and-core buildup may first be performed to reinforce the remaining tooth structure, followed by PFM crown placement—ensuring functional occlusion and preventing progressive pathology.

In daily life, avoid chewing hard objects to minimize excessive occlusal stress. Maintain thorough cleaning of tooth surfaces and interdental spaces, undergo regular periodontal care, and keep the crown margins clean and well-sealed to delay aging and wear of the restoration.