How Long Does a Dental Bridge Last? A Guide to Dental Bridge Lifespan

A dental bridge often lasts 10 years or more, and many last well beyond that with good care. Research reviews estimate that about 89% of conventional tooth-supported bridges are still in place after 10 years. Dental bridge lifespan depends on the bridge type, the health of the supporting teeth, your oral hygiene and habits such as grinding.

A bridge replaces one or more missing teeth by joining a false tooth, called a pontic, to crowns on the teeth or implants beside the gap. Because the bridge depends on those supporting teeth, keeping them healthy is the key to keeping the bridge. This guide from Sky Dental Centre explains what the research says about how long a dental bridge lasts, how different bridge types compare, why bridges fail, the signs that one needs attention and how to care for yours.

What Is the Average Dental Bridge Lifespan?

Many dental bridges last 10 years or more, and longer for many patients with good care. A widely cited review of studies found that about 94% of conventional bridges were still functioning after 5 years and about 89% after 10 years. Survival is lower for some designs, such as cantilever and resin-bonded bridges.

The figures come from a summary of systematic reviews by Pjetursson and Lang, published in the Journal of Oral Rehabilitation. “Survival” means the bridge is still in the mouth; some surviving bridges will have needed repairs along the way. Your own bridge may last a shorter or longer time than average, depending on the factors below.

How Long Do Different Types of Bridges Last?

Different bridge types have different track records. Conventional bridges supported by crowns on both sides have some of the best long-term survival. Implant-supported bridges perform similarly. Cantilever bridges, supported on one side only, and resin-bonded bridges, glued to the back of neighbouring teeth, have lower survival over 10 years.

Sources: Pjetursson and Lang 2008 for the first three rows; Thoma et al. 2017 in Clinical Oral Implants Research for resin-bonded bridges, with figures higher than the 2008 estimate for that design.

Most of the studies behind these figures followed bridges made with established materials such as porcelain fused to metal. Newer all-ceramic and zirconia bridges have shorter follow-up in research, although they are widely used. These are averages across many studies. The right bridge type for you depends on where the gap is, the condition of the neighbouring teeth, your bite and whether implants are suitable.

What Shortens or Extends a Bridge’s Life?

A bridge tends to last longest when the supporting teeth and gums stay healthy, your bite forces are controlled and the bridge is well designed for its position. Poor cleaning, frequent sugar, smoking, teeth grinding and chewing hard objects all shorten its life.

Why Do Dental Bridges Fail?

Dental bridges most often fail because of problems with the supporting teeth rather than the bridge itself. Research on conventional bridges reports decay and loss of pulp vitality, meaning the nerve of a supporting tooth dies and may need a root canal, among the most common biological complications. Mechanical problems include loosening, chipping and fracture.

• Decay at the crown edge. Plaque collects where the crown meets the tooth. Decay there can undermine the bridge.
• Nerve damage in a supporting tooth. A tooth prepared for a crown can later need root canal treatment.
• Gum disease and bone loss. These weaken the support for the bridge.
• Loss of retention. Cement can wash out, or resin-bonded wings can debond.
• Fracture or chipping. Porcelain can chip, especially with grinding.

Signs Your Dental Bridge May Need Attention

Signs that a bridge needs attention include new sensitivity, pain when biting, movement, a bad taste or smell around the bridge, bleeding gums, visible chips or a change in how your teeth meet. Early checks often allow a simpler repair instead of a full replacement.

Some problems cause no symptoms at all, which is why X-rays at regular check-ups matter: decay under a crown edge is often only visible on an X-ray. If a bridge comes off completely, keep it and contact your dentist. It can sometimes be cleaned and re-cemented if the supporting teeth are healthy.

Can a Dental Bridge Be Repaired, or Does It Need Replacing?

Some bridge problems can be repaired, such as small porcelain chips or a bridge that has come loose but has healthy supporting teeth. Others need replacement, for example significant decay under a supporting crown, a fractured supporting tooth or major damage to the bridge. Your dentist will check with an exam and X-rays.

When a bridge needs replacing, the plan may change. A supporting tooth that has deteriorated may need a root canal, a longer bridge or an implant instead. Our guide to dental bridge cost in Ontario explains what affects the cost of a new bridge, and our article Do You Need a Dental Crown or Bridge? explains how dentists choose between them.

How Does a Bridge’s Lifespan Compare With Implants and Dentures?

A conventional bridge, a single implant crown and a removable partial denture all have different lifespans and upkeep. Research reviews put 10-year survival at about 89% for both conventional bridges and implant-supported single crowns. Partial dentures usually need relines and replacement as the mouth changes, and their clasps rely on neighbouring teeth.

Figures for bridges and implant crowns come from the Pjetursson and Lang review cited above.

What Happens When a Bridge Needs Replacing?

When a bridge needs replacing, your dentist removes it, assesses the supporting teeth and decides whether a new bridge of the same design is suitable. Supporting teeth may need treatment first. Sometimes the plan changes, for example to a longer bridge or an implant, if a support tooth is no longer strong enough.

1. Assessment. Exam and X-rays check the supporting teeth, gums and bone.
2. Removal. The old bridge is sectioned or lifted off.
3. Treatment of supporting teeth. Decay is removed; a root canal or core build-up may be needed.
4. New impressions or scans. A temporary bridge protects the teeth while the lab works.
5. Fitting. The new bridge is checked for fit and bite, then cemented.

Replacing a bridge early, before decay spreads, is usually simpler than waiting until a supporting tooth is lost.

How Do You Care for a Dental Bridge?

Care for a dental bridge by brushing twice a day with fluoride toothpaste, cleaning under the false tooth every day, limiting sugary snacks, wearing a night guard if you grind and keeping regular check-ups and cleanings. Cleaning under the pontic is the step many people miss.

• Use the right tools. A floss threader, superfloss, small interdental brushes or a water flosser can reach under the pontic.
• Clean along the gumline. Angle your brush where the crowns meet the gums.
• Use fluoride. Fluoride toothpaste helps protect the crown edges from decay.
• Protect against grinding. Ask your dentist whether a night guard suits you.
• Avoid using teeth as tools. Do not bite ice, pens or packaging.
• Keep regular visits. Your hygienist can clean areas you cannot reach and check the margins.

Dental Bridges at Sky Dental Centre

At Sky Dental Centre in Thunder Bay, we check the condition of existing restorations, including bridges, at review appointments, and we can show you how to clean under your bridge with floss threaders or interdental brushes. If you are considering a new bridge, we explain the options, including implant-supported alternatives, and provide a complete written cost breakdown before treatment begins.

Learn more on our Dental Crowns & Bridges in Thunder Bay page, read What Are Dental Crowns and Bridges?, or see how long dental crowns last. If you are comparing a bridge with an implant, our Dental Implants in Thunder Bay page explains that option.

Frequently Asked Questions

How long does a dental bridge last on average?

Many bridges last 10 years or more. Research reviews estimate about 89% of conventional tooth-supported bridges are still in place after 10 years. Lifespan depends on the bridge type, the health of the supporting teeth, your cleaning habits and whether you grind your teeth.

How long do Maryland bridges last?

Resin-bonded (Maryland) bridges have improved over time. A 2017 review estimated about 91% survive 5 years and about 83% survive 10 years. They suit selected front-tooth gaps and need less tooth preparation, but can debond. Your dentist can tell you whether one suits your situation.

Do implant-supported bridges last longer than regular bridges?

Not necessarily. In the reviews summarized here, implant-supported bridges had a 10-year survival of about 87%, similar to conventional bridges at about 89%. The advantage of implants is that they do not depend on neighbouring teeth, rather than a guaranteed longer lifespan.

Can a loose bridge be glued back on?

Sometimes. If the bridge is intact and the supporting teeth are healthy, your dentist may clean and re-cement it. If there is decay or damage underneath, the teeth may need treatment and the bridge may need replacing. Keep the bridge and book an appointment as soon as possible.

Why does food get stuck under my bridge?

A small space under the false tooth is normal, and food can collect there. Daily cleaning with a floss threader, interdental brush or water flosser keeps the area healthy. If food traps more than before, or the area is sore, ask your dentist to check the fit and the gums.

Book a Bridge Check in Thunder Bay

Dental bridge lifespan is often 10 years or more, and good daily cleaning, controlled grinding and regular check-ups help yours last as long as possible. Many bridge problems start with the supporting teeth, so early checks make a real difference.

If your bridge feels different, or you are considering a new one, book an appointment online or call us. We will check your bridge and supporting teeth and explain your options clearly.

This article is general information, not dental advice for your situation. Speak with a dentist about your own bridge and teeth.