All-on-4 Dental Implants: How They Work & What to Expect

Living with loose dentures or a full arch of failing teeth wears on your confidence at every meal.

All on 4 dental implants come up again and again as the fixed alternative to removable dentures. Yet most people are unsure how four implants hold a full arch, whether they qualify, or what it costs. The answer depends on your jawbone, your general health, and the result you want.

This guide explains how All-on-4 implants work and who they suit. It also covers how they compare to dentures and traditional implants, and what to expect to pay.

What Are All-on-4 Dental Implants?

All on 4 dental implants replace a full arch of upper or lower teeth using four titanium implants as anchors. The dentist places two at the front of the jaw and two angled at the back, then fixes a full bridge of teeth on top. Because the back implants are tilted, they use the bone you already have, avoiding the grafting that full-arch cases often need. The result is a fixed set of teeth you never take out, with the look and function of a natural smile.

The four implants act like natural tooth roots, holding the bridge firmly so it does not shift when you eat or speak. Unlike a removable denture that rests on the gum, an All-on-4 bridge anchors into the jaw itself. The same method works for the upper jaw, the lower jaw, or both.

All-on-Four Dental Implants: How the Treatment Works

The All-on-4 process starts with a consultation and CT scan to plan the implant angles. On treatment day, the surgeon removes any failing teeth, places the four implants at carefully planned angles, and attaches a fixed temporary bridge, often on the same visit, which is why it is called teeth in a day.

Over the next few months the implants will fuse with the bone through osseointegration, and your dentist will swap the temporary bridge for a permanent one in your final shade. A systematic review in the Journal of Clinical and Experimental Dentistry reported an All-on-4 implant survival rate above 99% beyond two years, making All-on-4 one of the better-evidenced full-arch options. Read more on our dental implants page.

Note: The fixed bridge on four implants is sometimes called an all-on-four bridge, screwed in place so only your dentist can remove it.

All-on-4 Implants: Am I Suitable?

All-on-4 suits people who have lost most or all of their teeth in an arch, or whose teeth are failing and need removing. Suitability depends mainly on having enough healthy bone to hold the implants, and on general health that supports good healing.

You may be a strong candidate if you:

• have lost a full arch of teeth or face several extractions
• have enough jawbone at the front to anchor the angled implants
• are in reasonable general health and do not smoke heavily
• want a fixed solution rather than a removable denture
• can commit to the healing period and ongoing cleaning

Cambridge University Hospitals NHS Trust reports an implant success rate of 80% to 95% over 15 years in healthy mouths. A consultation with scans is the only reliable way to confirm suitability.

All-on-4 vs Dentures & Traditional Implants

Choosing between All-on-4, dentures, and a mouth full of single implants comes down to stability, bone health, and cost. All-on-4 is the middle ground: more secure than dentures, less involved than eight or more separate implants.

Compared with removable dentures, All-on-4 ends the daily worry of movement and adhesives. Against single implants, it reaches a similar fixed result with fewer posts and no grafting.

Expert Tip: If you are weighing All-on-4 against a removable denture, ask your dentist to compare bite force, since fixed implants restore far more chewing power than a plate.

What Is Recovery Like After All-on-4 Treatment?

Most people need a short period of rest after the surgery. Swelling, tenderness and bruising are common in the first few days, and your dentist will explain how to manage them. A soft-food diet protects the healing sites while the implants begin to integrate with the jawbone.

Follow-up visits let the clinical team check healing, review the temporary teeth and make adjustments where needed. Keep the area clean as instructed, avoid smoking, and contact the practice if pain or swelling gets worse rather than better. The final fixed bridge is fitted only when your dentist is satisfied that healing is on track.

Expert Tip: Arrange easy meals and help at home for the first day or two. Planning a calm recovery makes it easier to follow the instructions and focus on healing.

All-on-4 Dental Implants in Cambridge at Regent Dental

At Regent Dental in Cambridge, All-on-4 treatment is planned and placed under one roof, so your scans, surgery, and follow-up all stay with one team. Patients often come to us after years of denture frustration, and in our experience the gain in confidence is what they mention most, often more than the chewing power they get back.

What you can expect with All-on-4 at our Cambridge practice:

• a CT scan and full assessment to confirm your bone and plan the implant angles
• a fixed temporary bridge on treatment day where your case allows
• a permanent bridge fitted once the implants have healed
• 0% finance to spread the cost of treatment

Helpful Tip: Bring a list of the foods you miss most to your consultation, since it helps the team set the bite around the way you actually eat.

Frequently Asked Questions – All-on-4 Dental Implants

Here are the questions patients ask us most often when they are weighing up All-on-4 dental implants.

What are All-on-4 dental implants?
All on 4 dental implants replace a full arch of teeth using four titanium posts that support a fixed bridge. Two are positioned at the front and two are angled at the back to make the most of the available bone.

How long do All-on-4 implants last?
With good hygiene the implants can last for decades. A study following patients for up to 17 years reported implant survival above 97%, though the bridge on top may need renewing sooner.

Is the All-on-4 procedure painful?
The surgery is done under local anaesthetic, often with sedation, so you should not feel pain. Mild soreness and swelling for a few days afterwards are normal and ease with standard pain relief.

Can you get teeth in a day with All-on-4?
In many cases, yes. Where your bone and bite allow, the surgeon can fit a fixed temporary bridge the same day as the implants, which is why it is called teeth in a day.

Am I too old for All-on-4 implants?
Age itself is rarely the barrier. General health and bone quality matter far more, and many older patients do very well with All-on-4. If your bone has thinned over years without teeth, your dentist can assess whether angled placement or a small graft keeps the treatment possible.

All-on-4 vs dentures: which is better?
It depends on what you want. All-on-4 gives a fixed bite that does not slip, while dentures cost less upfront and stay removable. Most people who move from dentures to All-on-4 say the biggest change is eating normally again without thinking about movement.

How long does recovery take after All-on-4 treatment?
The first few days are usually the most uncomfortable, while the gums and bone continue to heal over several months. Your dentist will give you a tailored timeline and tell you when it is safe to progress from soft foods and temporary teeth to the final bridge.

Are All-on-4 dental implants worth it?
For people tired of removable dentures, a fixed set of teeth that restores full chewing power is often well worth it. The right answer depends on your bone, your budget, and how much the daily limits of dentures affect you, all of which a consultation can weigh up.

What to Remember About All-on-4 Dental Implants

All on 4 dental implants give people with a failing or missing arch a fixed, natural-looking set of teeth, without a separate implant for every tooth. The treatment works for most patients with enough healthy bone, and tilting the back implants often avoids grafting. The result is a bridge that stays put when you eat and speak, restoring far more bite strength than a removable denture.

What this means for you:

• Four implants per arch carry a full fixed bridge, with no implant needed for every tooth.
• Angled back implants use the bone you already have and usually avoid grafting.
• Most healthy patients with enough bone are suitable for the treatment.
• A fixed bite restores far more chewing power than a removable denture.
• Recovery needs planning, with soft foods and follow-up care supporting the healing period.

Whether All-on-4 is right for you depends on your bone, general health, and goals. A consultation with our team, including a CT scan, covers whether four implants can carry your arch and what preparatory work is needed. For a detailed guide to the cost of All-on-4 treatment, read our All-on-4 dental implants cost guide.

Book Your All-on-4 Consultation at Regent Dental in Cambridge

If loose dentures or failing teeth are holding you back, All-on-4 could help, giving you a fixed smile you barely have to think about. The team at Regent Dental in Cambridge will assess your bone and talk through the clinical options for your case. Regent Dental is also currently running 35% off dental implant treatment, so ask how the offer could apply to your All-on-4 when you book.

Book your All-on-4 consultation to find out whether fixed teeth on four implants are right for you.

Information Sources

Dental implants in restorative dentistry (NHS, Cambridge University Hospitals)
Dental implant survival: systematic review (PMC)
Long-term dental implant survival analysis (PMC)