All-on-4 and All-on-6: full-arch implants explained

For someone facing the loss of most or all of their teeth, the idea of a fixed, natural-looking set of teeth on just a few implants sounds almost too good. That is what All-on-4 and All-on-6 offer. This article explains what these full-arch treatments are, how they differ, and who they suit, in plain terms without the marketing gloss.

What full-arch implants are

All-on-4 and All-on-6 are techniques for replacing a full arch of teeth, upper, lower or both, using a small number of implants to support a fixed bridge of teeth. Instead of one implant per tooth, which would be a great many, the entire arch is carried on four or six carefully placed implants. The result is a fixed set of teeth that does not come out, unlike a removable denture. For many people who have lost most of their teeth, it is life-changing.

All-on-4 versus All-on-6

The difference is in the number of implants supporting the arch, and it is a clinical decision, not just a bigger number being better.

All-on-4

Four implants support the full arch. It is efficient, often possible with less bone, and in many cases the implants can be placed at angles that make the most of the bone available, sometimes avoiding the need for grafting.

All-on-6

Six implants support the arch, spreading the load across more points. Where the bone allows, this can offer extra support and stability. Which is right for you depends on your bone, your bite and your dentist's assessment, not on a preference for a particular number.

Who full-arch implants suit

These treatments are considered for people who have lost most or all of their teeth in an arch, or whose remaining teeth are failing and need removing. They are a fixed alternative to full dentures, and for many the appeal is exactly that: teeth that stay put, let you eat normally, and do not need taking out at night. Suitability comes down to bone, gum health and general health, confirmed by examination and 3D imaging.

What to expect

Full-arch treatment is planned carefully on 3D imaging, with the implants placed under local anaesthesia, and sedation available for anxious patients. A temporary set of teeth is often fitted while healing takes place, with the final bridge made once the implants have integrated. For patients travelling to Istanbul, this is usually planned over two visits around the healing period. You can read how implant healing works in our healing timeline article, and the basics of implants in our implant guide.

How full-arch compares to dentures

Many people considering full-arch implants are weighing them against a traditional denture, so the honest comparison helps. A removable denture is cheaper and needs no surgery, but it comes out, can move while eating or speaking, and often means avoiding certain foods. Over time it can also allow the jawbone to shrink, since nothing is stimulating the bone where the roots used to be. Full-arch implants are fixed, stay put, let most people eat normally, and the implants help preserve the bone. The trade-off is the greater upfront cost and the surgery and healing involved. For someone tired of the limits of a denture, fixed teeth on implants can be a genuine change in daily life, not just a dental upgrade.

A realistic view

Full-arch implants are a major, life-improving treatment, but they are still a clinical procedure with a healing period and a real commitment to aftercare. Done well, on properly assessed patients, they restore not just teeth but the confidence to eat and smile normally. The right approach is a careful plan for your mouth, not a one-size package, which is why a proper assessment always comes first.