Quick Summary
Most dental crowns remain functional for about 5 to 15 years, although many last longer with good oral hygiene, a healthy supporting tooth, a balanced bite and routine dental care.
A crown may need replacement earlier if decay forms at its edge, the material cracks, the cement weakens, the tooth fractures, the gums recede or heavy grinding places repeated pressure on it.
The material matters, but it is not the only factor. Crown design, tooth preparation, bite forces, daily cleaning, gum health and the condition of the tooth underneath can be just as important.
Contact a dentist if your crown feels loose, causes pain when biting, has a sharp edge, develops a visible crack, traps food or creates a bad taste.
Dental crowns are often described as permanent restorations. In dentistry, permanent means the crown is intended for long-term use rather than temporary wear. It does not mean the crown will last forever.
Some crowns need replacement after several years. Others continue working for decades. There is no calendar date on which every crown automatically expires.
At Magnolia Dentistry, Dr. Liyan Massaband, DMD, MPH evaluates damaged crowns, failing restorations and teeth that may need a new crown at the Burbank office. Patients can also learn about same-day dental crowns in Burbank and other restorative dentistry services.
What Is a Dental Crown?
A dental crown is a custom restoration that covers most or all of the visible part of a prepared tooth. It helps rebuild the tooth’s shape, protects weakened structure and restores the surface used for biting or chewing.
A dentist may recommend a crown for:
- A tooth with a very large filling
- A cracked or fractured tooth
- A tooth weakened by extensive decay
- A tooth worn down by grinding or erosion
- A back tooth after root canal treatment
- A badly shaped or heavily discolored tooth
- A dental implant that needs its final visible restoration
- A tooth that cannot be protected predictably with a filling alone
A crown is not always the first or only option. A smaller cavity may be treated with a tooth-colored dental filling. A tooth with moderate structural damage may be suitable for an inlay or onlay. The dentist should recommend the least extensive restoration that can protect the tooth predictably.
The American Dental Association describes a crown as a restoration used to cover a tooth and restore its normal shape and size. Crowns can also protect weak teeth, restore broken teeth and support dental bridges.
What Is the Average Lifespan of a Dental Crown?
A practical general estimate is about 5 to 15 years.
That does not mean a crown is expected to fail at year five or must be replaced at year fifteen. A crown that fits well, remains intact and has no decay underneath may continue functioning beyond that range.
Clinical research often reports crown survival rather than a fixed expiration date. Survival means that the crown is still present and functioning. It does not necessarily mean the crown has never needed polishing, adjustment or minor repair.
Reviews of dental crown performance have found that a large majority of single crowns remain in service after five years. Longer-term survival varies more because crown materials, supporting teeth, patient habits and study methods differ.
A dentist should evaluate the actual crown rather than replacing it based only on age.
Can a Dental Crown Last 20 or 30 Years?
Yes, some dental crowns last 20 years or longer.
Long life is more likely when:
- The underlying tooth remains free from decay
- The crown margin stays well sealed
- The crown material remains intact
- The patient cleans carefully around the gumline
- Bite pressure is balanced
- Teeth grinding is controlled
- The gums and supporting bone remain healthy
- Dental visits identify small problems early
A crown that has lasted 20 years still needs regular evaluation. Older restorations can develop open margins, wear, cracks or decay that may not be obvious at home.
The goal should not be to keep an old crown at any cost. The goal is to preserve the tooth underneath and replace the crown when there is a clear clinical reason.
How Crown Material Affects Longevity
There is no single crown material that is best for every tooth.
The dentist chooses a material based on:
- Front or back tooth location
- Available space
- Remaining tooth structure
- Bite pressure
- Teeth grinding
- Cosmetic expectations
- Gum position
- Opposing tooth material
- Whether the crown is tooth-supported or implant-supported
- Whether chairside milling or laboratory fabrication is being used
Porcelain-Fused-to-Metal Crowns
Porcelain-fused-to-metal crowns have a metal supporting structure covered with tooth-colored porcelain.
They have a long clinical history and can be used on front or back teeth. Over time, the porcelain layer may chip, or a darker metal edge may become visible if the gums recede.
The crown may still function even when the appearance changes. Replacement depends on the amount of damage, the location and the patient’s cosmetic concerns.
All-Ceramic Crowns
The term all-ceramic includes several different materials rather than one crown type.
Ceramic crowns are valued for their tooth-colored appearance. Their strength and fracture behavior depend on the ceramic, crown thickness, design, bonding method and bite.
A small surface chip does not always mean the entire crown must be replaced. A dentist must determine whether it can be polished, repaired or safely monitored.
Zirconia Crowns
Zirconia is widely used for tooth-colored crowns because it can provide high strength.
Different forms of zirconia have different levels of strength and translucency. A more translucent zirconia may not behave exactly like a less translucent, higher-strength version.
Zirconia is not automatically the longest-lasting choice in every mouth. The design, polish, bite and condition of the supporting tooth still matter.
Lithium Disilicate Crowns
Lithium disilicate is a tooth-colored ceramic often selected when appearance and light transmission are important.
It may be used for front teeth, premolars and selected back teeth. Success depends on proper case selection, crown thickness, bonding and bite forces.
The material name alone cannot predict how long an individual crown will last.
Gold and Other Metal Crowns
Metal crowns have a long history of use and generally resist chipping because they do not have a porcelain surface layer.
They are less commonly selected for visible teeth because of their color. Some patients prefer them for back teeth, while others want a tooth-colored material.
Material allergies, cosmetic priorities, cost and availability should be considered.
Do Same-Day Crowns Last as Long as Laboratory Crowns?
Same-day crowns are designed from a digital scan and manufactured in the dental office using CAD/CAM technology.
A same-day crown is not a separate biological category. Its lifespan still depends on:
- The material selected
- The tooth preparation
- Crown design
- Milling and finishing
- Bonding or cementation
- Moisture control
- Bite adjustment
- Patient habits
- Remaining tooth structure
A chairside crown can perform well when the case is suitable and each step is completed carefully. A laboratory-made crown may be preferred when the case needs a material not available in the office, detailed cosmetic characterization or additional laboratory support.
Magnolia Dentistry offers CEREC same-day dental crowns for suitable cases. Not every crown must or should be completed in one visit.
What Factors Affect How Long a Crown Lasts?
1. The Health of the Tooth Underneath
A crown can only perform as well as the tooth supporting it.
A tooth with deep decay, a major crack, limited remaining structure or poor bone support may have a less predictable outlook than a strong tooth with healthy surrounding tissue.
Before placing a crown, the dentist should determine whether the tooth can be restored and whether additional treatment is needed.
2. Crown Fit and Margin Quality
The crown margin is the area where the restoration meets the natural tooth.
A well-fitting margin helps the patient keep the area clean. An open, rough or overhanging margin can collect plaque and food and may irritate the gums.
Dental X-rays and clinical examinations can help evaluate the supporting tooth and crown edge.
3. Tooth Preparation and Crown Thickness
The tooth must be shaped to provide enough room for the crown material while preserving useful tooth structure.
Too little space may create a restoration that is thin or overcontoured. Removing unnecessary tooth structure may weaken the supporting tooth.
The amount of preparation varies by material and tooth condition.
4. Bite Pressure
A crown that contacts too heavily may experience repeated stress.
Tell the dentist if:
- One tooth touches first
- The crown feels high
- Chewing is uncomfortable
- The jaw feels tired after treatment
- The crown develops repeated chipping
A small bite adjustment may prevent continued irritation or excessive force.
5. Teeth Grinding and Clenching
Grinding and clenching can expose crowns to repeated pressure, especially during sleep.
Signs may include:
- Flattened tooth surfaces
- Jaw tightness
- Morning headaches
- Cracked restorations
- Tooth sensitivity
- Repeated crown failure
A dentist may recommend a custom night guard when grinding is affecting natural teeth or restorations.
Patients who also have jaw discomfort can review Magnolia Dentistry’s TMJ and TMD treatment information.
6. Oral Hygiene
The crown material cannot develop a cavity, but the natural tooth at the crown edge can.
Plaque left around the gumline may contribute to:
- Tooth decay
- Gum inflammation
- Bad breath
- Gum recession
- Loss of supporting bone
Brush twice daily with fluoride toothpaste and clean between the crowned tooth and neighboring teeth every day.
7. Gum Health
Healthy gums help protect the tooth and crown margin.
Gum disease and recession may expose the edge of the crown or root surface. This can make cleaning harder and increase sensitivity or decay risk.
Routine dental cleanings and preventive visits help monitor both the crown and surrounding gum tissue.
8. Diet and Chewing Habits
Crowns are designed for normal eating, but they are not indestructible.
Habits that can shorten crown life include:
- Chewing ice
- Biting hard candy
- Cracking nuts with the teeth
- Chewing pens
- Biting fingernails
- Opening packages with the teeth
- Repeatedly chewing very sticky foods
- Holding pins or tools between the teeth
Hard objects can chip the crown or fracture the supporting tooth. Sticky food may pull at a crown that is already loose.
9. Dry Mouth and Cavity Risk
Saliva helps wash away food particles and neutralize acids.
Patients with chronic dry mouth may have a higher risk of decay around crown margins. Dry mouth can be related to medications, medical conditions, dehydration or other factors.
Tell your dentist if your mouth frequently feels dry, sticky or uncomfortable.
10. Routine Dental Care
A crown problem may be easier to manage when found early.
During a dental visit, the team may check:
- Crown movement
- Margin integrity
- Chips or cracks
- Gum inflammation
- Food trapping
- Bite pressure
- Decay on the supporting tooth
- Changes visible on dental X-rays
Dental visits cannot guarantee that a crown will last a particular number of years, but they can help detect changes before they become emergencies.
Can a Tooth Develop Decay Under a Crown?
Yes.
A crown covers much of the visible tooth, but natural tooth structure remains underneath and near the gumline.
Decay can begin where the crown meets the tooth, particularly when plaque collects around the edge. It may then spread under the crown.
Possible signs include:
- Sensitivity near the crown
- Pain when biting
- Food trapping
- A bad taste
- Bad breath from one area
- A dark area near the crown edge
- Gum swelling
- A loose crown
Decay under a crown does not always cause early symptoms. This is one reason dental examinations and appropriate X-rays remain important.
Treatment depends on the depth of decay and how much tooth remains. The crown may need to be removed so the dentist can examine and treat the tooth.
How Long Does a Crown Last After Root Canal Treatment?
A root canal and a dental crown perform different jobs.
The root canal treats inflamed or infected tissue inside the tooth. The crown protects and restores the remaining tooth structure.
Back teeth often require crowns after root canal treatment because they carry strong chewing forces and may already have large fillings or lost tooth structure.
The lifespan of the crown depends on:
- How much natural tooth remains
- Whether a core buildup is needed
- The condition of the root
- Crown fit
- Bite forces
- New decay
- Cracks
- How soon the final restoration is completed
Do not assume that every root-canal-treated tooth or crown will last for a fixed number of years.
The American Association of Endodontists notes that molars and premolars generally need crowns after root canal treatment, while some front teeth may be restored differently.
Learn more about root canal treatment in Burbank and why the final restoration matters.
How Long Do Implant Crowns Last?
A dental implant crown is the visible restoration attached to a dental implant.
The crown and the implant are separate parts. The crown may need repair or replacement even when the implant remains healthy and stable.
Implant crown longevity can be affected by:
- Crown material
- Screw or cement connection
- Bite forces
- Teeth grinding
- Implant position
- Gum and bone health
- Daily cleaning
- Maintenance visits
A loose implant crown does not automatically mean the implant has failed. The dentist must determine whether the issue involves the crown, screw, abutment, cement or implant itself.
Patients considering replacement of a missing tooth can learn about dental implant options in Burbank.
What Are the Signs That a Dental Crown Is Failing?
Schedule an evaluation if you notice:
- Pain when biting
- New sensitivity to hot or cold
- Crown movement
- A crack or chip
- A sharp or rough edge
- Food repeatedly trapping beside the crown
- Floss tearing or catching
- Swelling near the tooth
- Bleeding around one crown
- A bad taste or odor
- A dark area near the gumline
- Gum recession exposing the crown edge
- A change in the way the teeth meet
- The crown coming off
Some of these signs may have a simple explanation. Others can indicate decay, cement failure, fracture or infection.
Do not wait for severe pain. A crowned tooth can have significant decay or a crack before symptoms become intense.
Can a Damaged Crown Be Repaired?
Sometimes.
A dentist may be able to:
- Smooth a small rough area
- Polish a minor surface defect
- Repair a small chip with bonding material
- Recement a crown that has come off
- Adjust a high bite
Replacement may be needed when:
- The crown has a major fracture
- Decay is present underneath
- The crown no longer fits
- The tooth has fractured
- The crown repeatedly loosens
- The margin is open
- The appearance cannot be corrected with polishing or repair
- The supporting tooth needs root canal treatment or other care
A repair may extend service time, but it is not right for every type or location of damage.
What Happens When a Crown Needs to Be Replaced?
The dentist first evaluates why the crown failed.
Replacement may involve:
- Examining the crown, tooth, gums and bite
- Taking dental X-rays when needed
- Removing the old crown
- Checking for decay or fracture
- Removing damaged tooth structure
- Rebuilding the tooth when needed
- Preparing the tooth for the new restoration
- Taking a digital scan or impression
- Making and placing the new crown
- Checking the fit, contacts and bite
The new crown is not simply placed over untreated decay.
In some cases, the dentist may discover that the supporting tooth cannot be saved predictably. The treatment discussion may then include extraction and tooth replacement.
How Can You Make a Dental Crown Last Longer?
Brush Carefully Twice a Day
Use a fluoride toothpaste and a soft-bristled toothbrush. Pay attention to the gumline where the crown meets the natural tooth.
Brushing too aggressively does not clean better and may irritate the gums.
Clean Between the Teeth Daily
Floss or use another interdental cleaner recommended by your dental team.
Guide floss along the side of the crowned tooth and below the contact point. Do not simply snap it through the gums.
Implant crowns, bridges and connected restorations may require floss threaders, interdental brushes or other cleaning tools.
Attend Routine Dental Visits
Your cleaning and examination schedule should be based on your gum health, cavity risk and dental history.
Patients with gum disease, dry mouth or many restorations may need more frequent monitoring than patients with lower risk.
Protect the Crown From Grinding
Wear a night guard when prescribed. Bring it to dental visits so the fit and wear can be checked.
An over-the-counter guard may not fit well around complex dental work. Ask the dentist before using one.
Avoid Using Teeth as Tools
Do not use a crowned tooth to open packaging, bite thread, crack shells or hold metal objects.
These habits can damage both crowns and natural teeth.
Address Problems Early
A crown that feels high, catches floss or repeatedly traps food should be checked. Early correction may protect the crown and supporting tooth.
Do Crowns Stain or Change Color?
Many ceramic crowns resist external staining better than natural enamel, but they can still become dull from surface deposits, scratches or wear.
The surrounding natural teeth may also change color over time, making the crown appear lighter or darker by comparison.
Whitening gel does not change the color of crowns. If you plan to whiten natural teeth or replace a visible crown, the order of treatment should be discussed first.
Review Magnolia Dentistry’s professional teeth whitening options before changing the shade of teeth near visible restorations.
How Much Does Crown Replacement Cost in Burbank?
Crown replacement cost depends on:
- The tooth being treated
- Crown material
- Whether decay is present
- Whether a core buildup is required
- Whether root canal treatment is needed
- Whether gum treatment is needed
- Same-day or laboratory fabrication
- Dental insurance benefits
- Replacement-frequency rules
- Deductible and annual maximum
Many dental plans provide benefits for medically necessary crowns, but coverage varies. An insurance estimate is not a guarantee of payment.
Magnolia Dentistry should provide a written estimate after examining the tooth and reviewing appropriate dental X-rays.
Do not replace a crown based only on an online price or the age of the restoration. The condition of the tooth underneath is more important.
When Is a Crown Problem a Dental Emergency?
Call a dentist promptly if:
- The crown falls off
- The tooth is severely painful
- The face or gum is swollen
- The tooth has fractured
- The crown is loose enough to swallow
- The crown has a sharp edge cutting the mouth
- You cannot bite normally
- There is a bad taste with increasing pain
- Trauma damaged the crown or tooth
If the crown comes off, keep it in a clean container and bring it with you. Do not use super glue or household adhesive.
Contact Magnolia Dentistry’s emergency dentist in Burbank for urgent appointment guidance.
Dental Crown Evaluation in Burbank, CA
A crown should be evaluated based on its fit, condition and supporting tooth, not simply its age.
Dr. Liyan Massaband, DMD, MPH provides restorative dental care at Magnolia Dentistry in Burbank. The office evaluates loose crowns, cracked restorations, decay under crowns, broken teeth and teeth that may need new full-coverage restorations.
Treatment may include:
- Crown examination
- Dental X-rays
- Bite evaluation
- Crown repair
- Crown recementation
- Same-day crown replacement
- Laboratory crown replacement
- Tooth buildup
- Root canal treatment
- Extraction when the tooth cannot be restored
Magnolia Dentistry
2800 W Magnolia Blvd
Burbank, CA 91505
Phone: (818) 846-9041
Request a dental crown appointment if your crown feels loose, painful, rough or different when you bite.
Frequently Asked Questions About Dental Crown Lifespan
How long do dental crowns last on average?
A common general range is about 5 to 15 years. Some crowns need replacement sooner, while others remain functional for 20 years or longer.
Do dental crowns need to be replaced every ten years?
No. A crown does not need replacement simply because it reaches a certain age. Replacement should be based on decay, damage, fit, symptoms, gum changes and the condition of the supporting tooth.
Can a dental crown last a lifetime?
It is possible, but it is not something a dentist can promise. Natural tooth changes, gum recession, decay, bite forces and material wear can eventually create a need for repair or replacement.
How long do porcelain crowns last?
Porcelain-containing crowns can last many years, but lifespan depends on crown design, porcelain thickness, bite pressure and the supporting tooth. Porcelain can chip under excessive force.
How long do zirconia crowns last?
Zirconia crowns can perform well for many years. Their longevity depends on the type of zirconia, crown design, bite, tooth condition and maintenance.
How long do CEREC crowns last?
CEREC is a digital design and manufacturing workflow rather than one specific crown material. A CEREC crown’s lifespan depends on the selected material, preparation, fit, bonding, bite and care.
How long does a crown last after a root canal?
There is no fixed lifespan for a crown after root canal treatment. The outlook depends on remaining tooth structure, crown fit, cracks, decay and bite forces.
Can decay form underneath a crown?
Yes. The crown material does not decay, but the natural tooth can develop a cavity at or beneath the crown margin.
How do I know if my crown is loose?
You may notice movement, clicking, food trapping, a change in the bite or sensitivity. Do not repeatedly move the crown with your fingers or tongue. Schedule an examination.
Can a loose crown be recemented?
Sometimes. Recementation may be possible when the crown and tooth remain suitable. A new crown may be required if decay, fracture or poor fit is present.
Does a cracked crown always need replacement?
No. A small surface defect may sometimes be polished or repaired. A major fracture, open margin or structural problem usually requires replacement.
Why does my crown hurt when I bite?
Possible causes include a high bite, decay, a crack, inflammation around the root, gum irritation or a problem with the tooth underneath. An examination is needed to identify the cause.
Should I floss around a dental crown?
Yes. Clean between the crown and neighboring teeth every day unless your dentist has given different instructions for a connected restoration or implant crown.
Can teeth whitening change the color of a crown?
No. Whitening treatment changes natural tooth color but does not lighten ceramic, porcelain, zirconia or metal-based crowns.
Does dental insurance cover crown replacement?
Some plans cover medically necessary replacement after a required time period. Deductibles, annual limits, replacement rules and network terms vary.
Can I wait if my crown falls off but does not hurt?
Contact a dentist promptly. The exposed tooth may be weak, sensitive or vulnerable to movement and contamination even when it is not painful.
