Patients often ask how many years a crown will last. The honest answer is that there is no guaranteed figure. A well-placed crown on a healthy tooth, looked after well, can last many years. The same crown can fail within a few years if the tooth beneath it develops decay, the bite is heavy or grinding is not addressed.
In short: crowns commonly last a decade or more, but no material or certificate promises a set number of years. The tooth underneath and the bite above it often determine the lifespan as much as the crown itself.
What affects how long a crown lasts
The material
Metal and metal-ceramic crowns are strong and resistant to chipping, while all-ceramic crowns can look more natural but may be more prone to chipping on back teeth. The best material depends on the tooth's position, the forces it carries and your appearance priorities. Our crowns and bridges page covers the options we discuss.
The condition of the tooth underneath
A crown only covers what remains of the tooth. If the foundation is weak or decayed, the crown can fail even if the crown itself is intact. The quality of the preparation and the fit at the margin matter too.
Bite and grinding
Clenching and grinding put far more force on crowns than normal chewing and are a common reason for chipping, cracking or wear. If you grind your teeth — many people do during sleep without realising — mention it. Your dentist can discuss whether a night guard is appropriate.
Daily care and diet
Brushing twice daily with fluoride toothpaste, cleaning between the teeth and limiting sugary drinks all help protect the tooth at the gum line. Biting fingernails, pens, ice or hard foods can chip any crown.
How to look after a crown
- Clean carefully at the gum margin — it is where food collects and decay starts
- Use interdental brushes or floss designed to reach under a bridge or between crowned teeth
- Attend regular check-ups so the crown and the tooth underneath can be checked
- Avoid very hard foods on the crowned tooth, especially if it is ceramic
- Wear a night guard if grinding has been identified
Warning signs to have checked
- A crown that feels loose or moves
- A visible crack, chip or hole in the crown
- Food catching at the gum line or a new gap
- Chronic bad breath or an unpleasant taste around the tooth
- Pain when chewing on the crowned tooth
- A crown that has come off entirely — keep it and call the clinic
If a crown breaks or falls off, see our broken crown guide and the lost filling or crown page.
Unsure if a crown needs replacing?
We can assess the crown and the tooth beneath it, explain options and give you an estimate before anything is replaced.
Related: crowns and bridges, do you need a crown after a root canal?.