All-on-4 dental implants are a way of replacing a whole arch of teeth (upper, lower or both) with one fixed bridge that is screwed onto four implants in the jaw, rather than one implant per tooth or a removable denture. They can suit people who have lost most or all of their teeth, or whose remaining teeth cannot be saved, provided their health and jawbone allow it. Whether it is right for you is something only a dentist can decide after examining you and looking at scans.

If you are weighing this up from South Africa, our guide to dental implants in Turkey for South African patients covers the practical side of having treatment with us.

What “All-on-4” actually means

“All-on-4” is a name for a treatment concept developed and trademarked by the implant company Nobel Biocare. Dentists also say “full-arch on four (or more) implants” or “All-on-X”, because the number of implants varies. The American Academy of Implant Dentistry (AAID) describes this kind of restoration as a bridge supported by four, five, six or eight implants that replaces a complete set of teeth, with the number depending mainly on the structure and volume of the bone.

The idea behind the four-implant design is simple. Two implants are placed upright towards the front of the jaw, and two are placed further back at an angle. Tilting the back implants lets them reach good-quality bone while avoiding structures such as the sinuses in the upper jaw and the nerve in the lower jaw. A peer-reviewed systematic review in the Journal of the Indian Prosthodontic Society notes that this approach aims to avoid bone grafting and can be used in people whose jawbone has shrunk after tooth loss.

The implants hold one continuous bridge, often with artificial gum at the base, screwed into place. Only your dentist can remove it, for cleaning or repair.

Who may be a good candidate

Full-arch treatment is usually discussed when most teeth in an arch are missing or failing, or a conventional denture is loose. Cleveland Clinic explains that the main requirement for any implant is enough healthy bone in the jaw for it to take hold, and that only a dentist can tell you whether you are a candidate.

Factors your dentist will look at include:

• Bone: how much bone you have and where. Scans show whether four implants are enough or more are wiser.
• General health: conditions and medicines that affect healing, including bone medications. Cleveland Clinic lists unmanaged diabetes among the conditions that may make implants a poor choice; well-controlled diabetes is a different conversation.
• Smoking and vaping: both can disrupt healing and raise the risk of infection around implants. Our contracted dental team will strongly encourage you to stop, and smoking-related failure is excluded from our guarantee.
• Grinding or clenching: extra strain on the bridge can affect the choice of materials.

Temporary fixed teeth and the final bridge

One feature that attracts many people to the four-implant approach is that, when the implants are firm enough at surgery, a temporary fixed bridge can often be attached within days rather than leaving you without teeth. In the studies covered by the systematic review above, the bridge was fitted within 48 hours of surgery. Whether this suits you is decided on the day.

The temporary bridge is usually made of acrylic. It is less strong than the final bridge and carries you through healing while the implants bond with the bone. Cleveland Clinic notes that this bonding process (osseointegration) can take anywhere from three to nine months. Meanwhile you will typically be asked to eat softer foods.

Once your dentist confirms the implants have healed, the final bridge is made. It is stronger, often built on a metal or zirconia framework, with refined shape, colour and bite. The review recommends reinforcing final bridges with a cast metal framework, partly because fracture of acrylic is the most common problem reported, especially in people who grind their teeth.

Single implants, full-arch on implants or dentures: how they compare

Question	Single implants (crowns or small bridges)	Full-arch bridge on four (or more) implants	Conventional removable dentures
Usually suits	One or a few missing teeth, with healthy neighbouring teeth	Most or all teeth in an arch missing or failing	Missing teeth where implants are not possible or not wanted
Fixed or removable?	Fixed	Fixed (only the dentist removes it)	Removable, taken out to clean
Surgery needed?	Yes, one implant per gap or bridge	Yes, usually four to six implants per arch	No implant surgery
Effect on jawbone	Implant helps maintain bone where placed	Implants help maintain bone where placed	Bone beneath can continue to shrink, so fit changes over time
Stability when eating and speaking	Very stable	Very stable	Can move or click, especially lower dentures
Daily care	Brushing and cleaning between teeth	Brushing plus cleaning under the bridge (water flosser, special floss or brushes)	Removing, brushing and soaking dentures
Typical trips to Turkey	Usually two	Usually two	Depends on the case; ask before you plan

For a wider look at implants, veneers and treatment at home or abroad, see dental implants and veneers: South Africa or Turkey?

Trips, healing and what to plan for

For full-arch treatment, the pattern is usually two visits. The first covers your assessment, scans, any extractions, implant placement and, where suitable, the temporary fixed bridge. You then fly home and heal for several months. The second visit is for fitting and adjusting the final bridge. Your dentist confirms the timing, which can change if grafting or extra healing is needed. For a detailed walk-through of each appointment, read the dental implant procedure, step by step.

For patients travelling from South Africa:

• Expect swelling and bruising, so plan quiet days before flying. Our patients can stay at Mandarin Grove, our own recovery retreat in Urla, İzmir, where staff look after you and pass even small concerns straight to the medical team.
• Between visits, our team stays in touch online and on WhatsApp. Turkey is only one hour ahead of South Africa, so messages and video calls fit easily into your day.

Cleaning and long-term care

The bridge cannot decay, but gum and bone around implants can become infected. The AAID warns that late infections around implants (peri-implantitis) can cause bone and gum loss, and that regular monitoring by a skilled dentist is crucial. Daily care usually includes:

• Brushing the bridge and the gum line twice a day with a soft brush
• Cleaning underneath the bridge daily; the AAID calls a water flosser essential, and your dentist may suggest special floss or interdental brushes
• Professional cleaning and check-ups, which the AAID suggests twice a year and sometimes more often
• Wearing a night guard if you grind your teeth, if your dentist recommends one

Cleveland Clinic notes that while implants themselves can often last a lifetime with good care, the teeth attached to them may need repair or replacement in time.

Working with your dentist in South Africa

You will need a dentist or hygienist at home for routine care, and it helps to involve them early. Tell them what you are planning before treatment. After each trip, ask our contracted dental team for a written record of the implant brand and system, the components used and your scans, so that a local dentist knows exactly what is in your mouth. If something feels wrong, message us on WhatsApp straight away. Treatment covered by our treatment guarantee is carried out in İzmir.

When full-arch implants may not be right for you

Full-arch implants may not be the right option, or staying in South Africa may be better, if:

• Several of your own teeth could reasonably be saved, in which case keeping them is usually preferable
• Your diabetes or another medical condition is not well controlled, or you take medicines that affect bone healing
• You smoke and are not ready to stop
• You cannot realistically take two long-haul trips several months apart, or need very frequent face-to-face reviews

Many South African dentists and prosthodontists offer excellent full-arch care, and treatment close to home is a perfectly sensible choice.

Frequently asked questions

Is All-on-4 the same as dentures?

No. A conventional denture rests on the gums and is taken out to clean. An All-on-4 style bridge is screwed onto implants and stays fixed; only a dentist can remove it.

Will I leave the surgery with teeth?

Often, yes. If the implants are stable enough at surgery, a temporary fixed bridge can be attached within days. If not, the dentist will explain the alternative. The final, stronger bridge is fitted after the implants have healed.

What is the difference between All-on-4 and All-on-6?

Both support a full-arch bridge. All-on-6 uses six implants instead of four. The number depends mainly on how much bone you have and how the bite forces need to be spread, and your dentist decides after scans.

How do I clean under a full-arch bridge?

Brush twice a day and clean underneath the bridge every day, often with a water flosser, special floss or small brushes. Professional cleaning and check-ups about twice a year, sometimes more often, are usually advised.

Can I have full-arch implants if I have diabetes?

Possibly. Unmanaged diabetes can affect healing and may make implants unsuitable, while well-controlled diabetes may not rule them out. Your dentist decides, sometimes after speaking with your doctor.

Ready to find out whether full-arch implants could work for you? Read our dental implants in Turkey page for South African patients, then book a free online consultation or message us on WhatsApp. Cost depends on the number of implants, any grafting, the bridge material and your package; we confirm it in writing after your consultation. For more on travelling to us, visit our guide for South African patients.

Sources

• Cleveland Clinic, Dental Implants
• American Academy of Implant Dentistry, 8 Common All-on-X Dental Implant Problems
• American Academy of Implant Dentistry, How to Clean Your Dental Implants Properly
• American Academy of Implant Dentistry, Implants vs. Dentures and Bridges
• Gaonkar SH et al. Survival rates of axial and tilted implants in the rehabilitation of edentulous jaws using the All-on-four concept: a systematic review. Journal of the Indian Prosthodontic Society, 2021;21(1):3–10