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Zirconia crowns are known for their exceptional strength, natural appearance and long-term durability. They are often recommended for both front and back teeth because they can withstand everyday chewing forces far better than traditional porcelain crowns. But even with their impressive strength, many patients still wonder: can zirconia crowns chip?
The short answer is yes, they can chip — but it is rare. When chipping does occur, it is usually linked to specific factors such as bruxism, trauma, or issues with the crown design or fitting.
Below, you’ll find a full breakdown of why zirconia crowns may chip, how to prevent it, and what to do if it happens.
Although zirconia is one of the strongest dental materials available, no crown is completely indestructible. Chipping usually happens due to:
- Teeth Grinding (Bruxism)
Grinding or clenching places excessive force on the crown. Over time, this can cause micro-fractures that eventually chip.
- Trauma or Accident
A strong blow to the mouth—sports injury, fall, or biting something unexpectedly hard—may lead to a chipped zirconia crown.
- Poor Fitting or Incorrect Bite
If the crown is too high or the bite is unbalanced, pressure concentrates on one area, increasing the risk of chipping.
- Layered Zirconia Designs
Older zirconia crowns with porcelain layering can chip more easily.
Modern monolithic zirconia crowns are far more resistant.
How Strong Are Zirconia Crowns?
Zirconia crowns are extremely strong and resistant to fractures, ranking among the most durable materials in dentistry. They are often used for molars where chewing forces are highest.
However, while the structure of zirconia rarely breaks, the outer surface can occasionally chip under excessive or uneven pressure.
Signs Your Zirconia Crown May Be Damaged
- Rough or sharp edges on the crown
- Food getting stuck more often
- Increased sensitivity
- A visible crack or small chip
- Discomfort when biting
Ignoring early signs may cause the fracture to expand.
What To Do If Your Zirconia Crown Chips
If your zirconia crown chips, you should:
- Contact your dentist immediately – even a small chip needs checking.
- Avoid chewing on the damaged side to prevent further cracking.
- Keep the area clean to avoid irritation.
In many cases, minor chips can be polished or repaired. More severe damage may require replacement.
Can a Chipped Zirconia Crown Be Repaired?
- Small chips: Often repairable by smoothing, polishing, or using composite resin.
- Medium chips: May be repairable depending on the location.
- Large chips or deep fractures: Usually require complete crown replacement.
Your dentist will evaluate the extent of the damage during an examination.
How to Prevent Zirconia Crowns From Chipping
✔ Wear a night guard if you grind your teeth
✔ Avoid chewing ice, pens, or very hard foods
✔ Attend regular dental check-ups
✔ Ensure the bite is adjusted properly after fitting
With proper care, zirconia crowns rarely chip and can last 10–20 years or longer.
FAQ – Can Zirconia Crowns Chip?
Can zirconia crowns chip and why does it happen?
Yes, zirconia crowns can chip, but it is uncommon. Chipping usually occurs due to grinding, trauma, an imbalanced bite, or issues with layered zirconia designs.
How likely is it for zirconia crowns to chip compared to porcelain crowns?
Zirconia crowns are far less likely to chip than porcelain or porcelain-fused-to-metal crowns. They are one of the most chip-resistant options available.
Can zirconia crowns chip if you grind your teeth (bruxism)?
Yes. Bruxism is one of the main causes of chipping. Using a night guard reduces the risk significantly.
What should I do if my zirconia crown chips suddenly?
Contact your dentist as soon as possible. Avoid chewing on the damaged side and let a professional assess whether it can be repaired or needs replacement.
Can a chipped zirconia crown be repaired, or does it need replacing?
Minor chips can often be polished or repaired with composite. Major chips or deep fractures typically require a new crown.
Do zirconia crowns chip more on front teeth or back teeth?
Back teeth are more prone to chipping due to higher chewing forces, but front teeth may chip after trauma or biting something hard.
How can I prevent zirconia crowns from chipping in the future?
Wearing a night guard, avoiding very hard foods, and ensuring your bite is correctly adjusted are the best ways to prevent chipping.
Can zirconia crowns chip during normal eating or chewing hard foods?
Normal eating rarely causes damage. However, chewing hard objects like ice, bones, or nutshells can lead to chipping.
How strong are zirconia crowns and do they still chip over time?
Zirconia is one of the strongest dental materials, and chipping is rare. But with long-term heavy force or grinding, small chips may still occur.
Can a zirconia crown chip if it is not fitted properly?
Yes. An incorrect bite or poorly fitted crown creates uneven pressure, increasing the risk of chipping.
Does a chipped zirconia crown cause pain or sensitivity?
Sometimes. If the chip exposes underlying tooth structure, sensitivity or discomfort may occur.
Can zirconia crowns chip after a whitening treatment?
No. Teeth whitening does not damage zirconia or cause chipping.
Are layered zirconia crowns more likely to chip than monolithic zirconia crowns?
Yes. Layered zirconia with porcelain on top is more prone to chipping. Monolithic zirconia crowns are the most chip-resistant option.
Can zirconia crowns chip due to temperature changes, such as hot and cold foods?
Temperature changes do not normally cause chipping. Physical force is the main factor.
How much does it cost to fix a chipped zirconia crown in the UK?
Repair fees vary from £50–£150, while a complete replacement typically costs £300–£900, depending on the clinic and crown type.