A full arch of teeth fixed to four implants, planned for people who have lost most or all teeth in one jaw.
What it involves
All-on-4 uses four implants, usually two upright at the front and two tilted at the back, to carry a complete fixed set of teeth on one jaw. The tilt lets the dentist use the bone that is available without grafting in some cases.
Who it suits
Considered for people missing most or all teeth in a jaw, or whose remaining teeth cannot be saved. It needs enough bone at the front of the jaw and healthy gums. When bone is very limited, a different plan or bone grafting may be advised.
How it usually works
Assessment with a 3D scan, then a plan that decides the number and angle of the implants. On the day of surgery, teeth to be removed are taken out, the implants are placed and a temporary fixed bridge is often fitted. The final bridge is made after the gums and bone have healed, usually several months later.
Risks and things to consider
Because the whole arch rests on four implants, the loss of one can affect the bridge. Temporary teeth are not as strong as the final set and the diet is restricted for a period. Infection around the implants and fracture of the bridge are possible. Cleaning under a fixed bridge needs a specific routine.
Questions to ask before you decide
Why four implants for my jaw rather than six? What is the temporary bridge made of and for how long will I wear it? What is the final bridge made of? How will I clean it? What is the plan if an implant fails?
General information, not medical advice. A dentist decides what suits you after examining you.