All-on-4

About All-on-4

All-on-4 replaces a full arch of teeth with a fixed bridge supported by four implants. The two back implants are usually angled to make the most of the available bone, which can sometimes avoid the need for bone grafting.

It is used for people who have lost most of their teeth in an arch, or whose remaining teeth cannot be saved. In many cases a fixed temporary bridge is fitted within a few days, with the final bridge made after the implants have healed.

Who it may be suitable for

• Most or all teeth missing or failing in one or both arches
• Enough bone in the front part of the jaw to support the implants
• Wanting fixed teeth rather than a removable denture
• Commitment to daily cleaning and regular reviews

These are general points only. Your dentist confirms what is suitable after an examination, which usually includes X-rays or a 3D scan, and may recommend a different or more conservative option.

How it works

1. 01

   Full assessment

   A 3D scan, X-rays and an examination determine whether four implants can support the arch safely.

2. 02

   Extractions and placement

   Any remaining failing teeth are removed and the four implants are placed in one session.

3. 03

   Temporary bridge

   If the implants are stable, a fixed temporary bridge is attached within a few days.

4. 04

   Final bridge

   After healing, usually three to six months, the permanent bridge is made and fitted on a second visit.

What to expect and aftercare

1. First 2–3 days

   Swelling and soreness peak and then ease. You follow a soft diet, avoid hot drinks while numb, and take any prescribed medication.

2. First 1–2 weeks

   Stitches dissolve or are removed and the gum heals. You keep the area clean with gentle brushing and any rinse the dentist recommends.

3. Months 3–6

   The implant bonds with the bone (osseointegration). You may have a temporary tooth or denture during this time.

4. Second visit

   Once healing is confirmed, impressions or scans are taken and the final crown or bridge is fitted.

5. Long term

   Clean around implants as carefully as natural teeth, and keep regular check-ups so any gum problems are caught early.

Timelines vary between people. Always follow the aftercare instructions from your treating clinic.

Risks and considerations

• Not everyone is suitable. If bone is very limited, more implants, grafting or a different design may be safer.
• Losing one implant affects the whole bridge more than in designs with more implants, so careful planning and maintenance matter.
• Smoking, uncontrolled diabetes and some medications, including certain osteoporosis drugs, raise the risk of the implant not integrating. Share your full medical history.
• Swelling, bruising and discomfort for a few days are common. Infection, nerve irritation and implant failure are uncommon but possible.
• Implants can develop gum and bone inflammation around them (peri-implantitis) if not cleaned well. Daily cleaning and regular check-ups matter for the long term.

Common questions