What a crown does
A crown covers the whole visible part of a tooth. It is used when a tooth is cracked, heavily filled, worn down or has had root canal treatment, and to restore dental implants.
Zirconia crowns
Zirconia is a strong, metal-free ceramic. Monolithic zirconia crowns are made from a single block, which makes them suitable for back teeth that take heavy chewing forces. Layered zirconia has a porcelain surface for a more natural look on front teeth.
Porcelain crowns
Porcelain crowns reflect light in a way that is close to natural enamel, which is why they are often chosen for front teeth. Porcelain fused to metal crowns have a metal core for strength; all-ceramic crowns are metal-free.
How they compare
Neither material is better in every case. Your dentist will consider:
- Where the tooth is: front teeth need appearance, back teeth need strength
- Your bite and whether you grind your teeth
- How much healthy tooth structure is left
- Whether you have a metal allergy or prefer metal-free restorations
- The colour of your neighbouring teeth
Making the decision
Your dentist recommends a material after examining you and taking X-rays. You can ask why one material has been chosen over the other, and the material is named in your written treatment plan.
This article is general information and does not replace a consultation with a dentist. Suitability, risks and recovery are assessed individually.
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