Dental bridges

A dental bridge replaces one or more missing teeth with a fixed prosthesis, anchored to the teeth on either side of the gap. Unlike a denture it is cemented in place and is not removed for cleaning — it stays put, and you eat and speak with it as you would your own teeth.

Why replace a missing tooth at all?

A gap is not only a cosmetic matter. Over time:

• Neighbouring teeth drift into the space, tilting and opening new gaps that trap food
• The opposing tooth over-erupts — it grows down or up into the space, because nothing meets it
• Chewing load redistributes onto the remaining teeth, which take more force than they were designed for
• The bite can change, sometimes contributing to jaw discomfort

These changes happen slowly and are much easier to prevent than to correct. If a gap has been there for years, your practitioner will check whether there is still room for a replacement tooth before planning one.

There is a reasonable counter-argument for a single missing back tooth, particularly the last molar: if the bite is stable and nothing is drifting, leaving the gap can be a legitimate choice. We will say so when it applies rather than selling you a bridge.

The types

Conventional bridge. The most common design. The teeth on both sides of the gap are prepared — reduced in size — and crowns are made for them, joined to a false tooth that spans the gap. The whole unit is cemented as one piece.

Maryland (resin-bonded) bridge. The false tooth is held by thin wings bonded to the back of the adjacent teeth. Its great advantage is that it requires little or no drilling of the neighbouring teeth. It suits replacing a single front tooth where the bite allows, and is often the right choice for a young patient who may want an implant later. It is more prone to debonding than a conventional bridge, and re-bonding is usually straightforward.

Cantilever bridge. Supported from one side only. Used less often, in specific situations where there is a suitable anchor tooth on one side.

Implant-retained bridge. Two or more implants placed in the jaw carry the bridge, so no natural teeth are involved. This suits several missing teeth in a row and avoids preparing healthy neighbours, at greater cost and with a surgical stage and healing period.

The trade-off you should understand

A conventional bridge is a good, long-serving restoration — but it requires cutting down two healthy teeth to carry it. If those teeth already have large fillings or crowns, little is lost. If they are pristine, that is a real cost, and one worth weighing against an implant, which leaves them untouched.

There is a second consideration. If a bridge later fails because of decay in one abutment tooth, you can lose two teeth instead of replacing one. That risk is managed by cleaning, and it is the reason the cleaning section below is the most important part of this page.

Your practitioner will set out both options honestly, including the cost difference and the time involved. We recommend seeking a second opinion from another appropriately qualified practitioner if that would help you decide.

What is involved

First appointment. The anchor teeth are prepared under local anaesthetic. Impressions or a digital scan are taken, along with a shade match, and a temporary bridge is fitted so you leave with the gap covered. Allow around ninety minutes.

Laboratory stage. Your bridge is constructed by a dental laboratory. We work with local Australian labs, which keeps turnaround shorter than overseas fabrication and holds materials to Australian Standards.

Fitting appointment. The temporary is removed, the bridge tried in and checked for fit, bite and appearance, then cemented. Adjustments are made before it is cemented, not after — speak up at the try-in if anything looks or feels wrong.

Most cases are completed in two visits over two to three weeks.

While the temporary is in

The temporary bridge is held with soft cement so it can be removed easily at the next visit. Avoid sticky and very hard food on that side, and clean around it gently, pulling floss out sideways rather than snapping it upward.

If it comes off, keep it and call us. It is not an emergency, but leaving prepared teeth uncovered for long allows them to move, and the finished bridge may then not seat properly.

Materials

Bridges are commonly porcelain fused to a metal substructure, which combines strength with a natural appearance, or all-ceramic materials such as zirconia where aesthetics are paramount. Your practitioner will recommend based on where the bridge sits, how much force it takes, and how visible it is.

Cleaning under a bridge — the part that determines how long it lasts

This matters more than anything else on this page. You cannot floss a bridge in the usual way, because the units are joined. Plaque accumulates underneath the false tooth and around the margins of the anchor crowns, and decay at those margins is the most common reason a bridge eventually fails.

You will need to clean underneath it daily, using superfloss, a floss threader or an interdental brush. We will show you how at the fitting appointment and check your technique at your recall visits. Ten seconds a day is the difference between a bridge lasting a decade and lasting considerably longer.

A water flosser is a useful addition for some people, but it does not replace physically passing something under the span.

How long do they last?

Well-made bridges commonly last many years, and often more than a decade. Longevity depends on how well the margins are kept clean, how heavily you bite, whether you grind, and the condition of the anchor teeth. If you grind, an occlusal splint is worth discussing.

Bridges do not decay, but the natural teeth holding them can.

What can go wrong

• Decay at a margin, the most common cause of eventual failure
• An abutment tooth needing root canal treatment. Preparation stresses the nerve, and a bridge can often be accessed through and repaired rather than replaced
• Debonding, particularly with Maryland designs. Keep the bridge and call us
• Ceramic chipping, more likely in grinders
• Gum recession exposing a margin at the front, which is a cosmetic and hygiene problem
• Loss of an abutment tooth, which usually means remaking the restoration as a larger bridge, an implant or a denture

Bridge, implant or denture?

There is no universally correct answer — it depends on the health of the neighbouring teeth, the bone available, your medical history, timeframe and budget.

In short: if the neighbouring teeth are already heavily restored, a bridge makes good sense. If they are untouched and the bone is adequate, an implant usually does. If cost or medical factors rule out surgery, a denture is a legitimate answer.

Cost and claiming

Fees depend on the number of units and the materials chosen, and include the laboratory work. A three-unit bridge is effectively three crowns, which is why it costs what it does. You will receive a written treatment plan with all costs before anything begins.

We claim on the spot through HICAPS — bring your card and pay only the gap. Major dental benefits usually apply, subject to your annual limits and any waiting periods. Afterpay and Zip are available, and larger plans can sometimes be staged across two health fund benefit years — ask us about timing. See payment options.

Book a consultation

Victorian Dental Group — 291 Wattletree Road, Malvern East VIC 3145

Phone (03) 9088 5808 · Monday to Friday, 8:00am–5:00pm · closed weekends and public holidays

Book online at any hour.

This page is general information and does not replace advice from a registered dental practitioner about your own circumstances. Any surgical or invasive procedure carries risks. Please see our Disclaimer.