All-on-4 dental implants in Turkey: a fixed full arch on four implants

How All-on-4 dental implants work

All-on-4 is a surgical and prosthetic concept rather than a product. The name is a registered trademark of Nobel Biocare, which helped develop it in the late 1990s; other manufacturers use the same principle under names such as All-on-X. The idea: four well-placed implants, splinted together by a rigid bridge, can carry a full arch of 10-12 teeth.

Why the rear implants are tilted

In the back of the upper jaw, the maxillary sinus often leaves only a few millimetres of bone. In the lower jaw, the inferior alveolar nerve, which gives feeling to the lip and chin, runs through the bone behind the chin. Tilting the two rear implants forwards by around 30-45 degrees lets your dentist place longer implants in denser bone while keeping clear of both structures.

The tilt has a second benefit. The implant heads emerge further back, so the bridge needs only a short unsupported extension (the cantilever) behind the last implant. A shorter cantilever means less leverage on the implants and on the screws. Well-planned cases usually keep it to about one to one-and-a-half teeth.

Primary stability and immediate loading

Fixed teeth within days are only possible because the implants are firmly wedged in the bone from the moment they are placed. This primary stability is measured during surgery, usually as insertion torque; many protocols look for values of around 35 Ncm or more before loading. The rigid temporary bridge then splints all four implants, so no single implant takes the full bite while bone grows onto its surface.

If stability is too low, the responsible choice is to wait and wear a temporary denture for a few weeks. A clinic that promises fixed teeth to everyone before seeing the scan is guessing.

3D CBCT planning and bone levelling

A CBCT scan shows bone height, width and density in three dimensions, along with the sinus and the nerve. Dr. Taha G and Dr. Hatice G use it to plan the position, length and angle of every implant. The scan also shows whether the ridge needs levelling. A fixed bridge needs roughly 12-15 mm of vertical space, and the join between the bridge and your gum should sit where your lip hides it when you smile. Levelling a few millimetres of bone during surgery is common and is part of good planning, not a complication.

Upper jaw vs lower jaw All-on-4

The two jaws behave differently, and that shapes the plan.

Because upper-jaw bone is softer, many dentists prefer six implants there when the bone allows it; see our All-on-6 dental implants page. The lower jaw is where All-on-4 has its strongest track record.

Who All-on-4 in Turkey suits, and who it does not

Usually a good candidate

• Adults who have lost all or most teeth in one jaw
• Denture wearers with moderate bone loss
• People whose teeth are failing through advanced gum disease, once the infection is removed with the teeth
• People in good general health, or with well-controlled conditions such as blood pressure or type 2 diabetes

There is no upper age limit. Full-arch implants are regularly placed in patients in their seventies and eighties; general health matters more than age.

Not a candidate, or only after extra steps

• Heavy smokers who cannot stop for several weeks around surgery: failure and peri-implantitis rates are clearly higher.
• Poorly controlled diabetes: healing is slower and infection more likely. Treatment waits until blood sugar is stable.
• Intravenous bisphosphonates, denosumab or past radiotherapy to the jaw: these carry a risk of jaw osteonecrosis and need specialist medical clearance; some patients should not have elective implant surgery at all.
• Very little bone even at the front of the upper jaw: tilted implants cannot find anchorage. The options become zygomatic implants or bone grafting and a sinus lift.
• Severe grinding: possible, but usually with six implants, a stronger bridge design and a night guard.
• People who cannot clean under a bridge, for example because of limited hand movement. An implant-supported denture that comes out for cleaning may be kinder.

The alternatives

If several of your own teeth are healthy, saving them with crowns, bridges or individual implants is usually better than extracting everything. If budget or health limits surgery, an implant-supported denture on two to four implants clips in firmly but comes out for cleaning.

All-on-4 vs All-on-6 vs All-on-8 vs zygomatic implants

More implants are not automatically better. Each extra implant needs bone, adds surgical time and is one more site to keep clean. The right number is the one that gives a stable, cleanable bridge in your bone. Our guide All-on-4 vs All-on-6 goes through the decision in detail.

Acrylic-hybrid or zirconia: choosing the final bridge

The temporary bridge fitted on your first trip is lightweight acrylic (PMMA), designed to protect healing implants. The final bridge is made only after healing, once the gum and bone have settled.

Zirconia All-on-4 is popular because it looks natural and hardly stains. It is not right for everyone. If the opposite jaw has natural teeth or a denture, a very hard bridge can wear them, and in heavy grinders a rigid bridge passes more force to the implants. Your dentist recommends a material based on your bite, the opposing jaw, space and smile line.

Implant brands used for All-on-4

Full-arch work needs a system with angled multi-unit abutments, a well-documented surface and parts that are available in your home country. We work with Aggressor (Turkey), Swiss Implant (Switzerland), Osstem (Korea), Hiossen (USA), Medentika (Germany, part of the Straumann Group), Nobel Biocare (Switzerland) and Straumann SLActive (Switzerland). The same brands are used in UK and German practices. The system chosen for you is named in your written plan, and you receive an implant passport with the brand and batch numbers so any dentist at home can identify the parts.

Two trips to Istanbul: the All-on-4 timeline day by day

Before you travel, you leave your contact details, our coordinator calls you, a dentist assesses your case and you receive a written, itemised plan. If you already have a recent X-ray it can be useful; the CBCT scan itself is taken in the clinic. The how it works page explains the booking steps.

First trip: implants and fixed temporary teeth (5-7 days)

Between trips: 3-6 months at home

The implants fuse with the bone while you wear the temporary bridge and eat a soft diet. Gum and bone reshape after extractions, which is exactly why the final bridge cannot be made in week one.

Second trip: the final bridge (5-7 days)

Does All-on-4 hurt? Anaesthesia and the first week

Surgery is done under local anaesthesia, so you feel pressure and vibration but not pain. Sedation is available for most patients and makes a two- to three-hour session feel much shorter; general anaesthesia is possible in selected cases when it is medically appropriate. Afterwards most people describe soreness and swelling rather than sharp pain, peaking on day two or three and fading over the following week. Bruising on the cheeks or neck is common and harmless.

Living with a fixed bridge: cleaning and maintenance

A fixed bridge cannot be taken out at home, and plaque collects on its underside and around the four implant necks. This is the part of All-on-4 that decides how long it lasts.

• Water flosser once a day, aimed under the bridge from the cheek and tongue side
• Interdental brushes in the right sizes around each implant
• Superfloss or bridge floss threaded under the bridge
• Soft or electric toothbrush twice a day, plus a single-tuft brush for the back edge
• Night guard if you clench or grind

Routine cleaning can be done by your dentist or hygienist at home; the implant passport tells them what system you have.

What can go wrong, and how it is handled

Long-term studies of the All-on-4 concept commonly report implant survival of around 93-98 % over 5-10 years, with bridge survival often higher because a single lost implant can usually be replaced. These are figures from the literature, not a promise for an individual case.

• Implant not integrating. Usually noticed in the first months as looseness or pain. The implant is removed, the site heals and a new one is placed, often on the second trip. With four implants, the bridge may need to be modified in the meantime.
• Temporary bridge fracture. Acrylic temporaries break if hard food is eaten too early. They are repaired, which is one reason for the soft diet.
• Final bridge chipping or fracture. Acrylic teeth wear and can debond; zirconia can chip. Grinding is the main cause. Repairs range from chair-side fixes to remaking the bridge.
• Loose prosthetic screw. A click or slight movement. The screw is retightened or replaced; do not ignore it.
• Speech and lip support. Many people lisp for a few days to weeks. In the upper jaw, the shape of the bridge affects "s" sounds and how the upper lip is supported. This is tested with the prototype before the final bridge is made.
• Peri-implantitis. Inflammation of the gum and bone around an implant, often painless at first. Daily cleaning and regular check-ups are the prevention.
• Numbness. Rare with 3D planning, usually temporary if it occurs.

Are All-on-4 implants good? Pros and cons

Advantages: fixed teeth that do not move, often within days; no palate plate; grafting often avoided; fewer implants and shorter surgery than other fixed options; chewing much closer to natural teeth than with a denture.

Disadvantages: a significant operation; extraction of remaining teeth; little reserve if one implant fails; more effort to clean than natural teeth; a bridge that wears and will need maintenance; two trips abroad.

Should you get All-on-4? It is a good option when your teeth cannot be saved and your bone suits it, and a poor one if it means extracting healthy teeth for speed.

How to choose an All-on-4 clinic in Turkey: questions and red flags

Reviews and Reddit threads show how people felt, but rarely what was placed in their mouth. Ask any clinic, including us:

1. Who plans and places my implants, and can I speak with them before travelling?
2. Is a 3D CBCT scan taken before surgery?
3. Which implant brand will be used, and will I receive an implant passport?
4. What is the temporary bridge made of, and what is the final bridge made of?
5. What happens if primary stability is too low for immediate loading?
6. Is the quote written and itemised, including extractions, sedation and the second trip?
7. What are the written guarantee terms, and what do they require from me?

Red flags:

• A "final zirconia bridge" fitted on day 5 of the first trip. Gum and bone change for months after extractions; a bridge made in week one will not fit well later.
• No CBCT scan, or planning from a panoramic X-ray alone.
• No implant brand named in writing, or "we use the best available".
• All teeth extracted when some could be saved, without explaining why.
• Surgery on the day you land, with no rest day before flying home.

For a broader view, read is it safe to get dental implants in Turkey.

What shapes your All-on-4 treatment plan and quote

Your plan is priced line by line. The main factors are: one or both jaws; the implant system; the final bridge material; the number of extractions; any bone levelling, grafting or infection treatment; sedation or general anaesthesia; and extra hotel nights. Current starting prices are on our dental costs in Turkey page.

Guarantee and follow-up from home

Your treatment comes with a written guarantee; the terms for the implants and for each bridge material are explained in your treatment plan before you travel. Guarantees normally require regular check-ups and good hygiene, so keep records of your dental visits at home. Your coordinator speaks English and German and stays in touch between trips; the second trip is also a full in-person check of the implants before the final bridge goes in.

All-on-4 is part of our wider dental implants range; see every implant option in one place.

Same day teeth: what "fixed teeth in a day" really means

All-on-4 is often described as "fixed teeth in a day", and for most patients that is true, with one important detail. On the day of surgery your four implants are placed and, where the bone is dense enough and the implants are stable, a fixed temporary bridge is fitted the same day, so you leave with teeth you can smile and eat soft food with. The final, stronger bridge is made after the implants have fused with the bone, usually three to four months later, on a second short trip to Istanbul. Whether a same-day bridge is safe for you is a clinical decision: it depends on your bone volume and how firmly each implant holds at placement. Your dentist confirms this during your examination and 3D scan, never before, and only loads the implants the same day when it will not put healing at risk. See all dental implant options.