Dental crowns are a long-lasting, natural solution to restore damaged, decayed or broken teeth. A crown encases a broken tooth to restore its shape, strength and function. Patients often ask how long dental crowns last, why they can fail and how to get the most out of theirs.

On average most crowns last 10-15 years. With excellent care however dental crowns can last up to 20-30 years and even a lifetime! Understanding the main factors that affect the life of your crown will give you peace of mind and help you look after your crown.

1. How long do dental crowns last?

The material your dentist chooses will play a huge part in how long your crown lasts. Modern materials provide high strength options:

  • Zircon Crowns – These have high impact resistance and are very strong to withstand heavy biting. They typically last between 15-20+ years and are perfect for molars.
  • Porcelain Fused To Metal (PFM) Crowns – Made from a strong inner metal and natural outer porcelain layer. These crowns last on average 10-15 years, although the porcelain can chip.
  • All Ceramic/E-Max Porcelain Crowns – These high quality lithium silicate crowns (E-Max) are an extremely realistic option for front teeth. They typically last between 10-15 years.
  • Gold/Metal Alloys – These high noble gold crowns provide great bio compatibility and are very flexible. These crowns rarely chip and typically can last 20-30+ years.

2. What affects how long a dental crown lasts?

Every dental restoration will deteriorate at different rates depending upon personal health factors, habits and dental factors.

  • Poor Oral Hygiene – Plaque can build up around the margin of your dental crown. If you don’t brush and floss regularly decay can develop underneath your crown.
  • Biting On Hard Objects – Biting ice, hard sweets, plastic packaging and fingernails can cause large amounts of pressure on your crown which can cause chipping to the ceramic layers.
  • Teeth Grinding – Grinding your teeth while you sleep can cause large amounts of pressure on your crowns. If you don’t manage this issue your crown won’t last as long.
  • Back Molar – Molars will take much more force when chewing. Crowns placed on your back molars will wear quicker.
  • Precision Fit – A well-fitted crown margin will prevent bacteria getting underneath. High precision dentists with expert lab technicians will ensure your crown is a tight fit and lasts longer.

3. Signs your crown needs replacing

Even the hardest crowns will start to show signs of wear. If you catch the signs early your dentist can replace your crown to prevent permanent damage to your natural teeth.

  • Pain/Tenderness – Pain, hot/cold sensitivity and sharp pain when biting can indicate there is decay underneath your crown. The nerve could also be inflamed and the crown is not sealing properly.
  • Cracking/Chipping – You will notice cracks in the ceramic. This will expose the metal underneath or sharp edges can cause irritation to your tongue and cheeks.
  • Loose Crown – If your crown feels loose or shaky then the cement underneath has likely washed out. This means bacteria can get underneath.
  • Gum Recession – If your gums have receded this can expose the dark metal of your PFM crown.
  • Misalignment – If your teeth feel like they no longer sit properly in your mouth there may be wear to your crown.

4. How to make your crown last longer

Some simple daily habits will make your crown last 5 years or 25 years. Looking after your crown will help protect your investment and natural tooth root.

  • Brush Twice A Day – Brush your teeth twice a day for 2 minutes with a soft bristle brush and non-abrasive fluoride toothpaste.
  • Floss Daily – Gently floss around the base of your crowned tooth daily.
  • Night-guard – Ask your dentist for a bespoke night guard to protect your crown if you suffer from teeth grinding or clenching.
  • Avoid Chewing Hard/Sticky Food – Avoid hard foods such as nuts, ice, sticky caramels and hard sweets.
  • Regular 6 Monthly Visits – Attend your dental clinic every 6 months to have your crown cleaned of hardened plaque.

5. Cost, Warranty and Value of Dental Crowns

Understanding the true value of your crown:

  • Cost – On average dental crowns cost between $800 and $2,500 depending on the material, location of the clinic and preparation required.
  • Insurance – Most insurance policies will cover 50% of the cost of a crown.
  • Lab Warranty – Many dental practices offer a 5-10 year warranty for their high quality zircon or ceramic crowns if you attend regular 6 monthly appointments.
  • Value – Although crowns can be a larger investment than fillings they can prevent root canals, extractions and expensive dental implants meaning they have a great long term value.

Top Tips For Long Lasting Crowns

  • Brush your teeth thoroughly twice daily with a soft bristle brush and non-abrasive fluoride toothpaste.
  • Floss daily around all your teeth, especially around your crown margin.
  • Rinse with an antibacterial mouthwash daily.
  • Wear a bespoke night guard every night if you suffer from teeth grinding.
  • Don’t use your teeth as tools.
  • Avoid chewing hard objects such as ice, unopened popcorn, sticky sweets and hard caramels.
  • Attend check-ups every 6 months.
  • Contact your dentist if you experience pain, sensitivity or a loose crown.

FAQ’s

Can a dental crown last a lifetime?

Yes, a dental crown can last a lifetime. Gold crowns and zircon crowns often last 30 years plus. As long as your maintain excellent oral hygiene, don’t eat hard foods and attend regular 6 monthly appointments.

What happens to my tooth underneath my crown?

As crowns age the cement can begin to dissolve. This causes bacteria and saliva to get underneath your crown causing hidden decay.

Is it painful to get an old crown replaced?

No, your dentist will numb the whole area. This includes the tooth, gums and jaw. They will remove your crown, clean any decay and fit a new crown.

Can I get my loose crown re-cemented?

Often yes. If your tooth is still in good condition your dentist will clean your crown and re-cement it. If there are deep cavities present your dentist will need to treat the decay and fit a new crown.

A dental crown is a great long term investment for your teeth. The type of material used will give a solid base but how long it lasts depends on your brushing habits, diet, wearing a night guard and attending regular check-ups. Work with your dental specialist to regularly check your crown and ensure you have a strong smile for years to come.