All-on-4 Implants: The Complete Guide

If you've lost most or all of your teeth in an upper or lower arch — or you're facing the prospect of losing them — you have more choices today than at any point in dental history. One of the most transformative is All-on-4, a full-arch restoration supported by just four carefully placed dental implants.

At Confident Smile Dental Practice in Shepperton, All-on-4 is one of the treatments patients ask about most, often after years of struggling with loose dentures, failing bridges, or teeth that simply can't be saved. This guide brings together the questions we hear most often — what it actually is, what it really costs, the myths that put people off unnecessarily, and why it's genuinely a permanent solution rather than another temporary fix.

What is All-on-4?

All-on-4 is a technique for replacing a full arch of teeth — upper, lower, or both — using four titanium implants placed strategically into the jawbone. A single fixed bridge of new teeth is then attached to those implants.

The clever part is the angle. The two implants at the back of the arch are tilted at up to 45 degrees. That angle does two things:

• It uses the densest, strongest bone available at the front of the jaw.
• It avoids important anatomy — the sinuses in the upper jaw and the nerve canal in the lower jaw — that would otherwise get in the way.

Because of this, most patients who were previously told they needed bone grafting to have implants can now be treated without it, or with much less. That's why All-on-4 has become one of the most popular full-arch options worldwide. You can read more about the wider category on our All-on-4, 6 & full-arch in a day page and our dedicated All-on-4 implants page.

How it differs from single implants and dentures

• Single dental implants replace one tooth each. Excellent for one or two gaps, but expensive and time-consuming for a full mouth.
• Traditional dentures rest on the gums. They move, they slip, they trap food, and over time they accelerate bone loss in the jaw.
• All-on-4 gives you an entire arch of fixed teeth supported by implants — teeth that don't come out, don't slip, and let you bite into an apple again.

Realistic cost factors

There's no single price for All-on-4 because no two mouths are the same. The final figure depends on a handful of factors, and honest clinics will walk you through each one.

1. Upper, lower, or both arches A single arch is roughly half the cost of a full-mouth reconstruction. Some patients only need one arch treated because the other still has healthy natural teeth.

2. Number of implants It's called All-on-4, but for some patients — particularly those with softer bone or a longer arch — we may recommend All-on-6 for extra stability. More implants means a higher cost but sometimes a more predictable long-term outcome.

3. Bone grafting One of the main reasons All-on-4 was invented was to avoid grafting. But if your bone volume is very limited — for example, after years of denture wear — a small graft or a sinus lift may still be needed. That adds to both time and cost.

4. Material of the final bridge The temporary bridge fitted on the day of surgery is usually acrylic. The final bridge, fitted a few months later, can be:

• Acrylic on titanium — more affordable, lighter, replaceable teeth.
• Zirconia — highly aesthetic, extremely durable, more expensive.
• Porcelain on metal — a middle-ground option.

5. Extractions and preparation If teeth need to be removed on the day, or if periodontal disease needs treating first, that's factored in too.

6. Sedation and anxiety support Many patients choose sedation for the surgery itself. If dental anxiety has held you back, that's completely normal — see our approach for nervous patients.

We always provide a written, itemised treatment plan before you commit to anything. You'll know exactly what you're paying for, and finance options are available to spread the cost.

Common misconceptions, debunked

Myth 1: "It's incredibly painful"

Implant surgery is done under local anaesthetic, often combined with sedation. Most patients report that the procedure itself was far less uncomfortable than they expected — often easier than the extractions they'd had years earlier. Post-operative discomfort is usually well controlled with over-the-counter painkillers for a few days.

Myth 2: "It's only for elderly people"

Tooth loss doesn't wait until retirement. We treat patients in their 40s and 50s who've lost teeth to gum disease, injury, or long-term failed dentistry. For a younger patient facing decades ahead, a stable, permanent restoration is often a far better investment than repeatedly patching up failing teeth.

Myth 3: "It's basically dentures that are stuck in"

It really isn't. Conventional dentures rest on your gums and rely on suction or adhesive. All-on-4 teeth are screwed onto titanium implants that have fused with your jawbone. They don't move. You don't take them out at night. You clean them like natural teeth, with a few extra tools.

Myth 4: "It takes years"

The provisional bridge — a full set of fixed teeth — is fitted on the same day as surgery in most cases. That's the "teeth in a day" part. The final, more refined bridge is fitted a few months later once healing is complete. Total time from consultation to final teeth is typically 4–6 months, not years.

Myth 5: "You lose your ability to taste food"

This one comes from experience with upper dentures, which cover the palate. All-on-4 bridges on the upper arch don't cover the roof of your mouth — meaning taste, temperature and speech feel far more natural than with a conventional denture.

Why All-on-4 is considered a permanent solution

The word "permanent" matters here. All-on-4 is designed to last decades — often the rest of your life — with proper care.

• The implants themselves are titanium posts that fuse biologically with your bone. Barring unusual circumstances (uncontrolled gum disease, heavy smoking, poorly controlled diabetes), they can last a lifetime.
• The bridge on top is the wearable part. It can be maintained, refurbished or replaced without touching the implants underneath. Think of it like the roof of a house — you may retile it decades later, but the foundations stay put.
• Bone preservation. Unlike dentures, which accelerate jaw shrinkage, implants stimulate the bone every time you bite — helping preserve your facial structure and stopping that "sunken" appearance dentures often cause over time.

Who is a good candidate?

You may be a candidate if:

• You have failing teeth that can't reasonably be saved.
• You wear dentures and are tired of movement, sore spots, or dietary limitations.
• You've been told you need bone grafts and want a less invasive alternative.
• You're in reasonable general health and don't smoke heavily.

You may need more discussion if you have uncontrolled diabetes, take certain bone medications, have advanced gum disease, or have very limited bone volume — but these are rarely absolute barriers. A proper consultation with 3D scanning will give you a clear answer.

What the process looks like

1. Consultation and 3D scan — we assess your bite, gums, bone volume and overall health.
2. Treatment planning — a written plan with staged costs and timeframes.
3. Surgery day — extractions if needed, four implants placed, temporary bridge fitted the same day.
4. Healing (3–6 months) — implants integrate with the bone. You have a full set of fixed teeth throughout.
5. Final bridge fitted — refined, custom, made to last.
6. Long-term maintenance — hygiene visits and check-ups, just like natural teeth.

Frequently Asked Questions

How long does All-on-4 last? The implants can last a lifetime with good hygiene and regular check-ups. The bridge on top typically lasts 10–20 years before it may need refurbishment or replacement, depending on materials.

Will I have teeth on the day of surgery? Yes. In most cases, a full temporary bridge is fitted the same day. You'll leave with a complete set of teeth, not empty gums.

Can I eat normally? Once healed, you can eat almost anything — including foods most denture wearers avoid. During the initial healing period we recommend a softer diet.

Is it covered by insurance? Most UK private dental insurance policies don't cover implants in full, but some contribute. We can help you understand what your policy includes.

What if one implant fails? Implant failure is uncommon (success rates are typically 95%+). If it happens, an implant can be replaced, and the bridge is designed to be removable by us for maintenance.

Can I have All-on-4 if I've been told I don't have enough bone? Very often, yes. The angled placement is specifically designed for patients with limited bone. Only a proper 3D assessment can give you a definitive answer.

If you'd like to know whether All-on-4 is the right option for you, book a consultation with our team in Shepperton. We'll take the time to explain your options honestly — including cases where an alternative might genuinely suit you better.