A Failing Bridge: Replace It With a New Bridge or With Implants? A Washington, DC Decision Guide

Practice clinician: Gerald M. Marlin, DMD, MSD, prosthodontist, Elite Prosthetic Dentistry, Friendship Heights, Washington, DC. Last updated October 30, 2026.

Bridges placed in the 1990s and 2000s are reaching the end of their service on schedule, and the patients who have them are in their fifties and sixties. When a bridge loosens, fractures or loses a supporting tooth, the replacement decision is not bridge versus implant in the abstract. It is a judgment about three things: the condition of the teeth that held the old bridge, the bone where the missing teeth were, and the bite the new restoration will live in. This guide explains how each option is judged, what can be staged, and shows documented cases in which each answer was the right one.

How a Bridge Fails

A bridge is replacement teeth carried by crowns on the teeth either side of the gap. It can fail in only a few ways, and the way it fails points to the answer:

• A supporting tooth decays under its crown. The most common failure, and the most invisible. The bridge may still feel firm while the tooth beneath one end is being hollowed out.
• A supporting tooth fractures. Teeth that carry a bridge carry more load than they were built for, and a tooth that has had a root canal is more brittle than a living one.
• The cement fails at one end. The bridge rocks or lifts. Food packs under it. Sometimes the tooth beneath is sound and the bridge can be recemented; often the loose end is loose because the tooth has changed.
• The porcelain chips or the framework breaks. Material failure, usually under grinding or an uneven bite.
• Bone and gum recede beneath the replacement teeth. A space opens under the bridge, food collects, and the appearance changes. The bridge may be intact but no longer fits the ridge it was made for.
• Gum disease around the supporting teeth. Bone loss loosens the support, and the bridge with it.

Our page on bridge problems describes the failure modes in more detail. This guide concerns what to do once a bridge has failed.

The Three Things That Decide the Replacement

The supporting teeth. Each tooth that held the old bridge is examined and imaged: decay, fracture, remaining structure above the bone, root condition, and bone around the root. A tooth that is sound once the old crown is removed can carry a new bridge. A tooth that has decayed below the bone, fractured through the root, or lost most of its support cannot, and a new bridge built on it will fail with it. Our guide on saving a tooth versus replacing it with an implant explains the classification tooth by tooth.

The bone where the teeth are missing. Bone under a bridge changes over years because nothing in it is being loaded. A CBCT scan shows whether there is enough bone, in the right position, to place implants where the replacement teeth need to be, or whether grafting would be required first. Where bone has been lost extensively and the patient does not want grafting, a new bridge may be the more practical answer.

The bite. The new restoration has to survive the forces that broke the old one. Wear, missing back teeth, grinding and a bite that no longer meets evenly are assessed before the design is chosen, and corrected where they would otherwise load the replacement unevenly. Our guide on why crowns keep breaking covers that assessment.

When a New Bridge Is the Right Answer

• The supporting teeth are sound, or can be made sound with new crowns, a post and core, or endodontic treatment.
• The span is short enough that the supporting teeth can carry it; a bridge replacing many teeth on few supports is a design the practice avoids.
• Bone under the missing teeth has been lost and the patient prefers not to graft, or implants are not advisable for medical reasons.
• The patient wants a fixed result without surgery and healing time.

A well-designed bridge on sound teeth, made in a laboratory that can refine it with the patient present, can serve for many years. It is not a lesser answer; it is the right answer for the right teeth.

When Implants Are the Right Answer

• One or more supporting teeth are lost or cannot be made sound, so a new bridge would need new, longer supports or would have no support at one end.
• The remaining neighboring teeth are healthy and would otherwise have to be cut down to carry a bridge.
• There is adequate bone, or bone that can be rebuilt, where the missing teeth were.
• The patient wants each tooth replaced independently, so that a problem with one does not affect the others.

Implants replace the missing teeth without loading the neighbors and maintain the bone around them. They require surgery, healing time and, where bone has been lost, grafting. Our guide on who should place your dental implant explains how the restorative design should determine the implant position.

When the Answer Is Both

Many failed bridges in patients over fifty are replaced with a combination: implants where supporting teeth were lost or where the span is too long, and crowns or a shorter bridge on the teeth that remain sound. This is the most demanding plan to design, because teeth and implants carry force differently and the bite has to work as one system, and it is the plan that most often preserves what can be preserved. Our guide on keeping your teeth or replacing them explains how the mixed plan is built.

What Can Be Staged

The replacement of a failed bridge is rarely one visit, and it does not have to be one phase:

1. Stabilize. The old bridge is removed if it can be, supporting teeth are treated or extracted, infection is addressed, and a provisional bridge restores appearance and chewing.
2. Decide. With the teeth examined and the scan reviewed, the design is set: new bridge, implants, or both, and in what sequence.
3. Build the foundation. Grafting where implants need bone; endodontic treatment, posts and crown lengthening where teeth are being kept; implant placement; healing.
4. Restore. Provisionals refined, then the final restoration from the on-site laboratory.

Phases can be placed around insurance years and the patient’s calendar. The order cannot be changed. Our guide on what determines the cost of implants and reconstruction explains how phasing interacts with benefits.

How Elite Prosthetic Dentistry Approaches a Failing Bridge

Dr. Gerald M. Marlin examines the supporting teeth and the bone on a CBCT scan, assesses the bite, and sets out the options with the reason for each. The practice provides all three answers, new bridge, implants, or a combination, and Dr. Marlin plans, surgically places and restores implants in the same office, so the recommendation is not shaped by what the office is able to do. Provisionals are made at the first treatment visit and refined as the design is tested; the final restorations are fabricated in the practice’s on-site laboratory, which has operated since 1985. Patients come to us for both comprehensive reconstruction and proactive replacement of aging dentistry, and a failing bridge is often the first visible sign that the second is due.

When Another Setting Fits Better

A short bridge with sound supporting teeth and a simple cement failure can be recemented or remade by a general dentist, especially one who already knows the patient. A patient with active gum disease across the mouth needs that treated first. A patient who needs extensive grafting under general anesthesia may be better served in an oral-surgical or hospital setting for that phase, with the restoration completed in the practice.

Documented Cases

A new bridge was the answer:

• Aging crowns and a long-standing bridge replaced as one coordinated plan, verified with provisionals and fabricated in the in-house laboratory.
• Loose, failing crowns and recurrent decay, with strategic teeth preserved and both arches rebuilt with customized bridges.
• Failing lateral incisor implants replaced with custom zirconia bridges after bone loss ruled out replacement implants.

Implants, or a combination, were the answer:

• A loose upper bridge and aging crowns rebuilt with staged implant reconstruction.
• Failing bridgework and severe bone loss rebuilt with a coordinated reconstruction: a custom long-span bridge rebuilding the upper arch and implants with crowns restoring the lower.
• A failing upper bridge and a breaking-down lower arch rebuilt with coordinated specialist care.

More cases are organized in the replacing aging dentistry and implant reconstruction success story hubs.

Related Decision Guides

• Should I save the tooth or replace it with an implant?
• When should old crowns and bridges be replaced?
• Keep your teeth or replace them? Selective implants vs. full-arch extraction
• Who should place your dental implant in Washington, DC?
• A broken, loose or failing bridge: what to do right now

Request a Bridge Evaluation

If a bridge has loosened, broken or lost a supporting tooth, request an appointment or call (202) 244-2101. Bring any X-rays; the evaluation will examine the supporting teeth, image the bone and set out the options with the reason for each.