How Long Does a Root Canal Crown Last? A Dentist’s Honest Answer
Written and reviewed by Dr. Aliya Khan, DDS — Columbia University School of Dental and Oral Surgery, 20+ years in practice, Moorestown NJ
If you had a root canal years ago and are wondering whether your crown is due for replacement — or you’re considering a root canal and want to know what to expect long-term — you’re asking the right question.
Quick answer: Root canal crowns typically last 10-15 years, though many crowns last 20+ years with proper care. Some patients get 25-30 years from a single crown. Lifespan depends on the crown material, your bite forces, and daily habits.
At Moorestown Smile Center, Dr. Aliya Khan, DDS explains exactly what determines crown lifespan, when replacement makes sense, and how to make your crown last as long as possible.
Root Canal Crown Lifespan by Material
Not all crowns are created equal. Here’s how the main types compare:
| Crown Material | Average Lifespan | Best For |
|---|---|---|
| Porcelain-Fused-to-Metal (PFM) | 10-15 years | Front and back teeth |
| All-Porcelain / Ceramic | 5-15 years | Front teeth (aesthetics) |
| Zirconia | 15-25+ years | Molars, high-stress bites |
| Gold | 20-40+ years | Molars (durability) |
| E.max (Lithium Disilicate) | 10-15 years | Front teeth (aesthetics + strength) |
At Moorestown Smile Center, Dr. Khan discusses which material makes the most sense for your specific case — factoring in appearance, budget, and location of the tooth.
What Affects How Long Your Crown Lasts?
Five main factors determine crown lifespan:
1. Material Type
As shown above, zirconia and gold crowns dramatically outlast porcelain crowns. But porcelain looks more natural.
2. Location of the Tooth
Back teeth (molars) endure 4-5x more biting force than front teeth. A crown on a molar will typically wear down faster than one on a front tooth.
3. Your Bite Habits
- Grinding or clenching (bruxism): Can cut crown life in half.
Nightguard highly recommended. - Chewing ice or hard objects: Damages crowns over time.
- Nail biting: Same problem.
4. Oral Hygiene
Crowns don’t decay — but the natural tooth beneath the crown CAN decay. Poor hygiene at the gum line is the #1 reason for crown failure. Brush and floss daily, especially around the crown edges.
5. Regular Dental Visits
Regular checkups catch issues before they turn into crown failures. Dr. Khan checks every crown at your comprehensive exam — including X-rays to see under the crown surface.
7 Signs Your Root Canal Crown Needs Replacement
Not sure if your old crown needs to be replaced? Watch for these
warning signs:
1. Pain or Sensitivity — Sharp pain around the crown, especially
with cold or biting pressure
2. Visible Wear or Chips — You can see damage to the crown
surface
3. The Crown Feels Loose — Any wiggling means the seal has
failed
4. Dark Line at the Gum — Sign of receding gums or metal
showing through
5. Gum Recession — Gums pulling back from the crown edge
6. Bad Taste or Smell — Could indicate bacteria under the
crown
7. Chewing Discomfort — Pressure sensitivity when biting
If you have any of these signs, don’t wait. Call Moorestown Smile Center at (856) 638-5266 for an evaluation.
What Happens If a Crown Fails?
When a crown fails, one of three things can happen:
Best case: Crown replacement
If the underlying tooth is still healthy, Dr. Khan replaces just the crown. Cost: $800-$1,500 depending on material.
Middle case: Root canal retreatment + new crown
If bacteria got under the failed crown and reinfected the tooth, re treatment is needed before placing a new crown. Cost: $1,500-$2,500 total.
Worst case: Tooth extraction + implant
If the underlying tooth is beyond saving, extraction is needed followed by a dental implant or bridge. Cost: $3,500-$5,000+.
This is why catching crown problems EARLY matters so much.
How Much Does a Replacement Crown Cost?
| Crown Type | Typical Cost |
|---|---|
| PFM Crown | $800 – $1,200 |
| All-Porcelain / Ceramic | $1,000 – $1,500 |
| Zirconia | $1,000 – $1,800 |
| Gold | $1,200 – $2,500 |
| E.max | $1,000 – $1,500 |
Does insurance cover crown replacement?
Most PPO dental insurance plans cover 50% of crown replacement if the crown is 5+ years old.
At Moorestown Smile Center, we verify your benefits before your
appointment. For patients without insurance or with high
out-of-pocket costs, we offer
CareCredit financing.
5 Ways to Make Your Root Canal Crown Last Longer
Here’s how to get 20+ years from your crown:
1. Brush and floss daily — especially around the gumline
2. Wear a nightguard if you grind your teeth — this alone
can DOUBLE crown life
3. Avoid chewing hard objects — no ice, pens, or nails
4. See your dentist every 6 months — catches problems early
5. Address grinding or clenching — TMJ treatment
if needed
When to Get Your Old Crown Checked
If you have a crown that’s:
- More than 10 years old → yearly evaluation recommended
- More than 15 years old → biannual evaluation strongly recommended
- More than 20 years old → active monitoring for signs of failure
Book your next crown checkup with Dr. Khan: (856) 638-5266.
Frequently Asked Questions
Root canal crowns last 10-15 years on average, but many crowns last 20+ years with proper care and maintenance.
Yes — some patients have crowns that last 30+ years, especially zirconia or gold crowns with good oral hygiene and no grinding.
Not always. If your crown is intact, sealed properly, and the underlying tooth is healthy, no replacement is needed. Regular checkups determine when replacement is warranted.
Yes. If the crown seal fails, bacteria can enter and reinfect the tooth. This is why replacing old, worn crowns before they fail is important.
Replacement crowns cost $800-$2,500 depending on material. Most insurance plans cover 50% if the original crown is 5+ years old.
No — the crown itself doesn’t decay, but the natural tooth underneath can. Good oral hygiene is essential for long crown life.
About the Author
Dr. Aliya Khan, DDS is a Columbia University-trained dentist and
the founder of Moorestown Smile Center in Moorestown, NJ. With
20+ years of experience in restorative dentistry, she has
performed thousands of root canals and crown placements. Voted
Best Dental Practice in Burlington County in 2024 and 2025.