Zirconia or metal-ceramic crowns: which should you choose?

A crown — often called a cap — covers and protects a tooth that’s broken, heavily filled, worn down or root-canal treated. Two of the most common choices today are zirconia and metal-ceramic (also called porcelain-fused-to-metal). Both work well, but they aren’t the same.

Zirconia crowns

Zirconia is a very strong, tooth-coloured ceramic. The crown is milled from a single block, with no metal inside.

• Looks natural — no dark metal line at the gum over time.
• Very strong — well suited to back teeth that take heavy biting forces.
• Metal-free — a good choice if you’d rather avoid metal.
• Kind to the gums — zirconia is highly biocompatible.

Metal-ceramic crowns

A metal-ceramic crown has a metal inner shell with porcelain layered over it.

• Proven over decades and still widely used.
• Strong, with a tooth-coloured outer layer.
• Over time, gums can recede and show a grey line at the edge, and the porcelain can occasionally chip.

Side by side

	Zirconia	Metal-ceramic
Appearance	Natural, no metal line	Good; may show a grey edge later
Strength	Very high	High
Metal-free	Yes	No
Often chosen for	Front and back teeth, implants	Back teeth where looks matter less

Which is right for you?

For most people who want a natural look and long-term strength, zirconia is our usual recommendation. Metal-ceramic can still be a sensible option in some situations. At your consultation we’ll look at the tooth, your bite and your budget, and explain the options clearly before you decide.

Looking after a crown

A crown can’t decay, but the tooth underneath it can. Brush twice a day, clean between your teeth, and keep up regular check-ups so we can spot any problem early.

Zirconia crowns at Dental Perfection →

This article is general information, not a diagnosis. Every mouth is different — please see a dentist for advice about your own teeth.