Do porcelain veneers wear down over decades of use?
Porcelain resists wear better than enamel, but glaze loss and edge chipping accumulate slowly.
Dental porcelain is harder than natural enamel, which is why the ceramic body of a veneer changes so little over the years. What does accumulate over decades is subtler: gradual loss of the surface glaze and tiny chips along the thin biting edge.
Wear runs both ways
The hardness works in reverse too: a roughened or unpolished porcelain surface can abrade the opposing natural teeth that bite against it. Grinding multiplies the effect, which is why worn-looking facets on either the veneer edge or the opposing enamel are logged at every recall and a guard is discussed when they progress.
The pace of wear varies from person to person with bite force, diet, and habits, so decades-old veneers can look nearly untouched in one mouth and visibly shortened in another. Periodic polishing and occlusal checks with a dentist keep both the ceramic and the opposing teeth in balance.
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