Dental bridges explained: filling the gap

If you have a missing tooth or a gap, a dental bridge is one of the main ways to fill it. It is a long-established solution, and understanding how it works, and how it compares with an implant, helps you choose well. This article explains what a bridge is, when it makes sense, and its honest pros and cons against the alternatives.

What a bridge is

A dental bridge fills the gap left by one or more missing teeth. In its classic form, it uses the teeth on either side of the gap as supports, with crowns fitted over them anchoring a false tooth that spans the space. The result is a fixed, natural-looking replacement that restores your bite and smile. The name is literal: it bridges the gap, supported at each end by your own teeth.

When a bridge makes sense

A bridge is a good option when you have a gap with healthy teeth on both sides that can support it. It is fixed rather than removable, looks natural, and restores function well. It can be quicker and less involved than an implant, since it needs no surgery or healing period, which suits patients who want a fixed result without an implant procedure, or for whom an implant is not suitable.

The main drawback

The key trade-off is that a traditional bridge relies on the neighbouring teeth, and preparing them means removing tooth structure to fit the supporting crowns, even if those teeth are perfectly healthy. This is the main argument against a bridge and in favour of an implant, which replaces the missing tooth without touching its neighbours. Our implant vs bridge article weighs this directly, and it is the central question when choosing.

Bridge versus implant

The honest comparison comes down to the neighbouring teeth and time. A bridge is faster and needs no surgery, but sacrifices tooth structure on healthy teeth and relies on them long-term. An implant preserves the neighbours and stands independently, but involves surgery and months of healing. Neither is universally better. If the teeth beside the gap already need crowns anyway, a bridge makes great sense. If they are healthy, many dentists favour an implant to avoid preparing them. Our detailed comparison covers this.

The different types of bridge

It helps to know that a bridge is not a single thing, since there are a few designs and the right one depends on your situation. The most common is the traditional bridge described above, supported by crowns on the teeth either side of the gap. A cantilever bridge is anchored on only one side, used where there is a supporting tooth on just one side of the gap. A resin-bonded bridge, sometimes called a Maryland bridge, uses wings bonded to the backs of the neighbouring teeth rather than full crowns, which preserves much more of those teeth but is generally suited to lighter loads such as a front tooth. And an implant-supported bridge uses implants rather than natural teeth as the anchors, which avoids preparing healthy neighbours altogether and suits larger gaps. Your dentist will recommend the type that fits the position of the gap, the health of the surrounding teeth and the load the bridge must carry. Knowing the options helps you understand why a particular design is proposed for your case.

Caring for a bridge

A bridge needs good care to last, with particular attention to cleaning under and around it, since the area beneath the false tooth needs keeping clean to protect the supporting teeth and gums. Your dentist shows you how, often with special floss or small brushes. With good daily care and regular check-ups, a well-made bridge lasts many years. Looking after the supporting teeth is looking after the whole bridge, as our caring for dental work article explains.