If you have lost most or all of your teeth in one jaw, you have probably heard the term All-on-4. It describes a treatment concept in which a complete, fixed arch of teeth is carried by just four implants. Here is what that means in practice.

The idea behind All-on-4

Traditionally, replacing a whole arch with implants meant placing six to eight implants and, in many cases, rebuilding lost bone first. That could take a year or longer.

All-on-4 simplifies this. Two implants are placed upright in the front of the jaw, and two are placed at an angle further back. The angled implants can be longer and anchor in the denser bone towards the front, bypassing areas where bone is thin — such as the sinus in the upper jaw or the nerve canal in the lower jaw.

Fixed teeth within days

Because the four implants are joined by a rigid bridge, they support each other. If the implants are stable enough at placement — something the surgeon measures during the procedure — a fixed temporary bridge can usually be screwed in within one to three days.

That is the key difference from a denture: you leave with teeth that do not come out, do not cover your palate and do not need adhesive.

Who is a good candidate?

People who have lost all teeth in one jaw or whose remaining teeth cannot be saved
Denture wearers who struggle with loose or uncomfortable prostheses
Patients who were told they do not have enough bone for implants — although this has limits
People in reasonable general health; diabetes and heavy smoking need to be well controlled

The treatment timeline

Assessment — photos or X-rays for a first plan, then a 3D CBCT scan in the clinic.
Surgery — removal of failing teeth if needed and placement of four implants.
Temporary bridge — fitted within days; soft diet for the first weeks.
Healing — about three to six months at home while the implants integrate.
Final bridge — a second trip of about five to seven days for the definitive bridge.

All-on-4 or All-on-6?

All-on-6 uses two more implants for extra support. It is often preferred in the upper jaw or for people with a strong bite, while All-on-4 needs less bone and surgery. Neither is automatically better — it depends on your anatomy.

Looking after your new teeth

The bridge stays in place; cleaning underneath it with a water flosser and special brushes is essential. Regular check-ups — ideally once or twice a year — help keep the gums and implants healthy for the long term.

Is All-on-4 right for you?

Only an examination can answer that, but a first opinion is easy to get. Send us photos or an existing X-ray and a dentist will tell you whether All-on-4, All-on-6 or another solution makes sense — along with a clear, written plan.