The Solution to Missing Teeth: Are You a Candidate for All-on-4?

A full arch of fixed teeth on a few well placed implants, for suitable patients often within 24 hours. Here is what the method is, what the evidence shows, and who it genuinely suits.

About this article: general information,

When did you last bite into an apple without thinking about it, the way you could with your own natural teeth? If the honest answer is “I cannot remember”, this is written for you. Missing teeth change more than a smile: they change what you can eat, how you speak, and how comfortable you feel in company.

Many people who have lived with a removable denture know that it often moves the problem rather than solving it. It slips, it presses, it dulls the taste of food, and over the years it holds less well as the ridge beneath it wears down. There is a more stable route back to fixed teeth, and for well chosen patients it changes daily life a good deal. It is called the All-on-4 method, with its close relatives All-on-6 and All-on-X. This is not a miracle and not the right answer for absolutely everyone, but for a large number of people it is a dependable path to firm, fixed teeth. Below we set out honestly how it works, what the studies show, and where its limits lie.

The idea

What All-on-4 actually is

All-on-4 restores a whole dental arch on four implants. The idea that makes it work is simple: the two implants at the back are placed at an angle rather than straight down. Tilting them lets the implant use the bone that is still there, spread the load across the arch, and, in most cases, avoid the extensive bone grafting a straight implant in a worn jaw would need. On top of those implants sits a fixed bridge that replaces the full set of teeth.

All-on-6 follows the same principle on six implants where the anatomy allows a wider spread of support, and All-on-X is the umbrella term for the concept on whatever number of implants best suits the jaw. Which arrangement fits you is decided from a 3D scan, not from a fixed rule, taking into account the amount and quality of bone, the position of the sinus and the nerves. guided implantology and CBCT

Support

Four to six implants

A full arch is carried on a small number of well placed implants, with the back ones angled to use available bone.

Grafting

Often avoided

Because the implants use existing bone, extensive grafting can frequently be bypassed, so treatment is usually shorter.

Result

A fixed bridge

The teeth are fixed, not removable. For suitable patients a temporary bridge can be fitted within 24 hours.

“For someone who has spent years fighting a loose denture, a fixed arch on a few implants is a real change in everyday life. It is a well studied method, but the result still depends on good assessment, careful surgery and honest aftercare.”

dr. Zdenko Trampuš, DDS · Ortoimplant DENTAL SPA

The evidence

What the evidence shows

The All-on-4 concept is not a claim without backing. It has more than two decades of published clinical results behind it. Rather than offer promises, we prefer to set out figures from the peer-reviewed literature, keeping an important distinction in view: the survival of the implants and the survival of the prosthetic bridge are two different things.

• A longitudinal study by Maló and colleagues followed edentulous lower jaws restored with All-on-4 for 10 to 18 years. The cumulative prosthetic survival was 98.8 percent, while cumulative implant survival was 93 percent over the same period.¹ In other words, even when an individual implant fails, the bridge usually stays in function.
• A systematic review by Soto-Peñaloza and colleagues, pooling a large body of published All-on-4 cases, reported implant survival above 99 percent beyond 24 months of follow-up.² Figures vary between studies and depend on patient selection, the experience of the team and regular check-ups, but the direction of the results is consistently favourable.

Two honest points belong with these numbers. First, they are averages across many clinics and patient types, not a prediction for any one person. Second, longer term evidence beyond ten years is still building, and results rest on the everyday work that follows treatment: good oral hygiene, regular reviews and general health. Strong data is a reason for confidence, not for a guarantee.

Suitability

Who the method suits

All-on-4 most often makes sense for people who:

• are fully edentulous, or have only a few remaining teeth that need to come out anyway,
• have worn a removable denture for years and want a stable, fixed solution,
• want to restore chewing and confidence within a reasonable timeframe,
• have enough bone of adequate quality to anchor the implants, which we confirm with a 3D scan (CBCT).

For planning we rely on guided implantology and CBCT imaging, which lets us define the position of the implants before surgery. That improves predictability and, in suitable cases, shortens time in the chair. All-on-4 service

Honesty

Who it is not for, and when to take care

A good deal of misunderstanding surrounds contraindications. Several general conditions and treatments do not automatically rule out implant surgery, but they do call for a more careful assessment and coordination with your physician. These include well controlled diabetes, treatment with bisphosphonates, and the use of blood-thinning medication. For each of these we make the decision individually, based on your records and overall health.

The factors that genuinely lower the odds of success are heavy active smoking, untreated gum inflammation and poor oral hygiene, and unrealistic expectations about upkeep. An honest conversation about all of this is part of the examination, because a lasting result is something we build together.

Our principle: if we judge that All-on-4 is not the best choice for you, or that preparation is needed first, we say so and suggest a better path. An honest assessment matters more than any single procedure.

When bone is missing

What if my jawbone has resorbed

A lack of bone was long treated as a barrier to fixed teeth. Today, most of the time, it is not. When a standard All-on-4 is not feasible because of bone loss, there are solutions built for more demanding cases:

• All-on-6, when conditions allow the load to be spread across six implants,
• zygomatic implants, which anchor in the cheekbone when the upper jaw has resorbed severely,
• pterygoid, subperiosteal and transnasal implants for particularly complex situations with very little bone available.

These techniques belong to advanced, demanding implantology and call for a team experienced in exactly this kind of case. The data supports them: a systematic review and meta-analysis of zygomatic implants for the atrophic edentulous upper jaw reported an implant survival of around 96 percent across the cases analysed.³ The point is that even when there is “no bone”, for a large share of patients there is still a route to fixed teeth, provided the feasibility is judged clearly and honestly. implants when there is no bone zygomatic implants

The procedure

The procedure and recovery

The surgery is carried out under local anaesthesia, and for more involved cases or on request under analgosedation, so it is calmer and more comfortable and you feel no pain during it. For suitable patients a temporary fixed bridge is fitted on the same day or within 24 hours, so you do not leave with an empty jaw. The permanent bridge is made later, once the implants have healed and integrated, usually after a few months.

Around the surgery our DENTAL SPA concept adds medically supported recovery: options such as hyperbaric oxygen, ozone therapy, lymphatic drainage, intravenous support and magnetotherapy, chosen where they genuinely help. These are additions, not a replacement for the essentials, namely sound surgery, good hygiene and regular check-ups. What is useful in your case we agree individually. DENTAL SPA recovery fixed teeth in 24 hours

On expectations: “fixed teeth in 24 hours” means a fixed temporary bridge, not that treatment ends on day one. Healing, the permanent bridge and follow-up all still matter. An honest timeline is part of the plan we give you.

First visit

What the free first examination includes

The first examination at our practice is free and without obligation. It is designed so that you leave with a clear picture of your options, not with pressure to decide. At the examination we typically cover:

• a conversation about your wishes, habits and medical history,
• a clinical examination of the mouth and an assessment of gum health,
• a panoramic radiograph and, where needed, a 3D CBCT scan,
• an assessment of the amount and quality of bone and the feasibility of All-on-4 or an alternative protocol,
• an outline treatment plan with realistic timelines and an explanation of each step.

The cost of treatment is set individually, only after the examination and diagnostics, because it depends on the number of implants, the type of bridge and the complexity of the case. After the examination you receive a clear written plan, so you can make your decision calmly and well informed.

Frequently asked questions