Full-Arch Implants: All-on-4 and All-on-X

Who this treatment is for

This is for people facing a specific and difficult situation: an entire upper or lower set of teeth that cannot be saved, or has already gone. It usually arrives after years of advancing gum disease, repeated failures of old dentistry, or extensive decay — and it is often accompanied by a good deal of embarrassment, which we would ask you to set aside. It is far more common than people realize, precisely because nobody discusses it.

The conventional answer has always been a full denture. For some people dentures work reasonably well. For a great many others they never do — they move while eating, they affect speech, they need adhesive, and the lower denture in particular is notorious for refusing to stay put because there is so little ridge to grip.

Full-arch implant treatment is the alternative. Four to six implants are placed into the jaw, and a complete fixed bridge of teeth is secured onto them. The result does not come out. You clean it like teeth, you eat with it like teeth, and it does not move.

All-on-4, All-on-6, All-on-X — what the names mean

These names simply describe how many implants support the arch. All-on-4 uses four; All-on-6 uses six. "All-on-X" is the general term used when the number is decided by the individual case rather than fixed in advance, which is the more honest way to approach it.

The number is not a marketing choice, it is a clinical one, driven by how much bone you have, how dense it is, how strong your bite is, and whether we are treating the upper or lower jaw. The upper jaw is softer and often benefits from more implants; the lower jaw is denser and frequently does well with four.

Be cautious of any practice that advertises a fixed number before examining you. The right answer comes from the 3D scan, not from the advertisement.

The part most people care about: teeth the same day

In most full-arch cases we can place the implants and fit a fixed temporary set of teeth during the same appointment. You do not leave without teeth, and there is no period of going without.

That temporary bridge stays in place for the several months the implants need to integrate with the bone. It looks good and functions well, though we ask patients to eat softer foods during this phase to protect the healing implants.

Once integration is complete, the temporary is replaced with the final bridge — made from stronger materials, refined in fit, and finished to a considerably higher esthetic standard. This is the set you keep.

What it costs

Full-arch implant treatment is a significant investment and it would be dishonest to suggest otherwise. In Manhattan, a single arch generally runs between $25,000 and $45,000, and both arches together typically fall between $45,000 and $80,000.

That figure covers the surgery, the implants, the temporary bridge, and the final bridge. The variation within the range comes down to how many implants are needed, whether extractions and grafting are required first, and what the final bridge is made of — an acrylic-and-titanium bridge sits at the lower end, while monolithic zirconia, which is stronger and looks considerably better, sits at the top.

Set against a well-made conventional denture at a few thousand dollars, this is a large difference, and for some patients a denture remains the sensible choice. What we would ask is that the comparison be made properly: dentures are typically relined every few years and replaced every five to ten, they continue to allow the jawbone to shrink underneath them, and many patients never fully adapt to them. Over twenty years the gap narrows more than the initial figures suggest.

We will give you a written, itemized estimate before anything begins, and where the case allows it we can phase the work across time to make the cost easier to manage.