Single tooth implants: replacing one missing tooth

An implant replaces the root, not the tooth

This is the distinction that makes the rest of it make sense. A bridge and a denture both replace what shows above the gum and leave the space underneath empty. An implant replaces what was in the bone.

That matters because bone behaves like muscle: it is maintained by being used. A tooth root transmits the force of biting into the jaw, and the jaw responds by keeping the bone where it is. Take the root away and the signal stops. The ridge narrows and shortens — quickly at first, around a quarter of the width in the first year, then more slowly but without ever stopping.

You can see this in anyone who has worn a lower denture for twenty years. The chin comes forward, the lower face shortens, and the ridge the denture was made to fit is no longer there. An implant is the only replacement that interrupts that process, because it is the only one that puts load back into the bone.

What actually happens to the tooth next door

The strongest argument for an implant in a single gap is usually about the teeth that are still there.

A conventional bridge is held by crowns on the teeth either side. To fit those crowns, both teeth are reduced — real, permanent removal of enamel from teeth that may have nothing wrong with them. In a mouth that has to last another thirty years, that is not a neutral act. Roughly a third of teeth prepared for bridgework need root treatment within a decade, because cutting close to the nerve is an insult the tooth may or may not tolerate.

If those neighbouring teeth already carry large fillings or need crowning anyway, that cost is already sunk and a bridge becomes a sensible option. We will tell you which situation you are in. It is a five-minute conversation at the consultation and it changes the recommendation entirely.

The back teeth nobody sees

About half the single implants we place are back teeth, and patients often arrive slightly embarrassed about wanting one — the assumption being that if it does not show, it does not matter.

It matters for chewing. Molars do the work; the front teeth are for cutting. People who have lost a molar or two on one side reliably move all their chewing to the other side, which they usually have not noticed doing. Over years that produces uneven wear, an overworked joint on one side and, in the space itself, a slow collapse as the tooth above drops down into it.

There is a limit to this argument. If you have already lost the very last molar in the arch and nothing has moved in ten years, replacing it may be an expense without much return, and we would say so.

The maintenance is the real commitment

An implant will not decay. What it can do is lose the bone around it, through the same inflammatory process that loosens natural teeth, and it does so faster because the tissue around an implant has a poorer blood supply and fewer fibres anchoring it.

Peri-implantitis is the main cause of implant loss after the first year, and it is largely preventable with an interdental brush used daily and a hygienist who knows what to measure. Every plan here includes those appointments. If you are not going to attend them, an implant is the wrong choice — that is said plainly at the consultation rather than discovered later.