A bridge that was fitted a decade ago and has never hurt can still be developing a problem. The false tooth cannot decay, but the two natural teeth holding it up can, and the gum underneath keeps changing shape. Checking an older bridge with X-rays at routine visits is how most late problems are found while they are still small.
Survival and success are not the same number
A systematic review of bridges followed for at least five years (Tan and colleagues, Clinical Oral Implants Research, 2004) estimated that about 89% of conventional bridges were still in place after 10 years. Only about 71% had reached that point without any complication at all. In other words, many bridges last well, but a fair share need some attention along the way.
The same review put the 10-year risk of a bridge coming loose at about 6%, of a supporting tooth fracturing at about 2%, and of decay leading to loss of the bridge at about 3%. Those are averages across many studies. Your own risk depends on how well the bridge is cleaned, how heavily you bite, and the condition of the supporting teeth to begin with.
Where the trouble usually starts
A conventional bridge has a crown cemented onto each of the teeth beside the gap, called abutment teeth, with the false tooth (the pontic) joined between them. Almost everything that goes wrong later involves those abutments or the gum around them.
The edge of each crown
The line where crown meets tooth is the weak spot. Plaque builds up there if it is not cleaned daily with a threader or interdental brush, and decay can spread under the crown without any pain until it is advanced. This is why X-rays matter even when nothing feels wrong. If a supporting tooth has already broken down, our article on a broken or decayed tooth under a bridge explains the options.
The gum line
Gums can slowly recede with age, heavy brushing or gum disease. Around a bridge this tends to show as a visible crown edge at the gum, or a small space opening under the pontic where it once sat flush. That space traps food. Neither change means the bridge has failed, but both deserve a look.
The cement and the bite
Biting surfaces wear over time, faster in people who grind or clench, and the bite can shift slowly. The cement can also let go at one end, especially if one abutment flexes under load. A bridge that has come loose at one end while the other still holds it is a particular worry, because decay can progress quickly under the loose crown while the bridge still feels secure. If you grind, see our article on teeth grinding in adults.
Signs it is time for a check
- The bridge rocks or feels loose when you bite or floss
- A bad taste or smell keeps returning near the bridge
- One of the supporting teeth has become sensitive or aches
- A dark line or crown edge has appeared at the gum, or a new gap under the false tooth
- The gums around the bridge bleed or feel sore
- Your bite feels different on that side
Any of these is a reason to book in rather than wait for your next routine visit. Facial swelling with pain, a fever, or swelling spreading towards the eye or neck needs same-day dental care, and difficulty swallowing or breathing means going straight to a hospital emergency department.
What can be done depends on the supporting teeth
| What the dentist finds | Usual next step |
|---|---|
| Bridge loose, supporting teeth sound | Remove, clean and recement it |
| Small, reachable decay at a crown edge | Repair the edge with the bridge left in place |
| Decay under a crown, but the tooth can be saved | Remove the bridge, treat the tooth, and make a new bridge |
| A supporting tooth cracked or beyond repair | Remove that tooth and consider an implant, a longer bridge or a denture |
| Gum recession or a visible edge only | Monitor, or replace if appearance or food trapping bothers you |
Losing a supporting tooth usually means the whole bridge comes off. That is often the point where an implant is discussed, since it does not depend on the neighbouring teeth. Our comparison of an implant, bridge or denture covers the trade-offs, and the article on getting an implant years after an extraction explains why the bone under an old pontic matters.
Typical costs if replacement is needed
As general Australian market ranges, not quotes: a new three-unit bridge is about $3,500 to $6,500, and a single implant with crown about $4,000 to $7,000, more if bone grafting is needed. Recementing a loose bridge costs much less than replacing it. Our dental bridge cost guide explains what drives these figures. For Lumi Dental offers, see current deals or the crowns and bridges page. After an examination, you will usually receive a written treatment plan, often by email.
Getting more years from a bridge
Daily cleaning under the pontic matters more than anything else. A floss threader, a thicker floss made for bridges or a small interdental brush reaches where ordinary floss cannot; our guide to floss threaders and superfloss shows the technique. Brushing fluoride toothpaste along the gum line protects exposed crown edges, regular check-ups with X-rays catch edge decay early, and a night guard helps if you grind.
Common questions about older bridges
Can an old bridge be repaired rather than replaced?
Sometimes. A loose bridge on healthy teeth can often be recemented, and small decay at an edge the dentist can reach can sometimes be repaired in place. Decay under a crown or a crack in the bridge usually means it has to be replaced.
My bridge feels different but does not hurt. Should I worry?
Gum recession, wear and small shifts in nearby teeth can all change how a bridge feels. Decay under a crown is often painless as well, so it is worth having it checked.
Is a gap under the false tooth a fault?
Usually it reflects gum shrinkage, not a problem with the bridge itself. It can trap food, so clean under it every day, and a review can confirm there is no decay at the crown edges.
If your bridge has been in for many years or has started to feel different, Lumi Dental can check it with X-rays and talk you through the options. Read more about check-ups at Lumi Dental or see current deals.
