Guide
Implant, bridge or denture — sorting out the fork in the road
Three ways to replace a missing tooth. How they differ in principle, in service life and in cost, and which situations point to which.
Three different principles
An implant puts an artificial root into the bone where the tooth was, and a tooth on top of it. A bridge reshapes the teeth on either side of the gap into pillars and spans them with a linked restoration. A denture sits on the gum and comes in and out.
The decisive difference is whether the neighbouring teeth get touched. A bridge means grinding down two healthy teeth; an implant leaves them alone. Over a long enough horizon, that single difference is the fork in the road.
What points to what
If the neighbouring teeth already need crowns, a bridge can be the sensible answer — you are using teeth that were going to be capped anyway. If both neighbours are healthy, the cost of grinding them down is high, so an implant is considered first.
Where several teeth are missing in a row, or where general health and bone condition make surgery unfavourable, dentures come into the picture — including implant-supported dentures held by a few implants. This is not a question with one right answer; it turns on the neighbouring teeth, the bone, general health and budget together.
Read service life and cost together
A bridge loads the pillar teeth. If a pillar tooth fails, the whole bridge may have to be redone. An implant costs more up front but is not entangled with its neighbours, and with maintenance it tends to last.
Ask at the consultation: "If this has to be redone in ten years, what will most likely have caused it?" How a dentist explains the weakness of each option tells you a lot about the depth of the consultation.
FAQ
Frequently asked
Which lasts longer, an implant or a bridge?
It depends on maintenance. A bridge carries the structural weakness that a failing pillar tooth means redoing the whole thing. An implant stands independently of its neighbours and, given care, often lasts a long time.
Is a bridge ever the better choice?
Yes — when the teeth on either side already need crowns, since they are being capped anyway. It is also considered where general health makes surgery difficult.
How soon after extraction do I have to decide?
The longer a gap is left, the more bone resorbs, and the more likely an implant will need a graft. Discussing the plan before the extraction can open options such as immediate placement.
What is an implant-supported denture?
Two to four implants placed to anchor a denture. It bites and holds better than a conventional denture while costing less than a full arch of implants, which makes it a middle option worth considering.
How far apart are the three on cost?
Up front, generally denture < bridge < implant. Factor in the risk of having to redo the work and that order can change, which is why itemised estimates and re-treatment terms belong side by side.
Are dentures covered by national insurance?
From age 65, both dentures and implants (two in a lifetime) are covered. The conditions differ for each, so confirm your own eligibility with the clinic and the insurance service.
Can I start with a bridge and switch to an implant later?
Yes, but bone under the gap continues to resorb while the bridge is in place, so a graft may be needed later. Raise the long-term plan at the consultation rather than after.
One molar is missing — can I just leave it?
Leave a gap long enough and the neighbouring teeth tilt into it while the opposing tooth drifts down, which unsettles the bite. Even if you cannot decide now, ask what leaving it will cost you.
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