Do I Need All-on-4 or All-on-6? How to Tell Which Is Right
Specialist Prosthodontist · Taki Dent, Antalya
Most patients arrive having already decided they want fixed teeth on implants. The harder question is which procedure they actually need: All-on-4 or All-on-6? The good news is that the decision is not a matter of opinion — it follows fairly clear clinical logic. Here is exactly how I work it out in consultation, so you can understand where you are likely to fall.
Three factors decide it: bone, bite and budget
Almost every All-on-4 vs All-on-6 decision comes down to these three, weighed in this order.
1. Bone — usually the deciding factor
All-on-4 was designed specifically to work with less bone. Its two rear implants are tilted to engage the dense bone at the front of the jaw and avoid the sinus cavities and nerve, which is why so many patients can have it without grafting. All-on-6 places its rear implants more upright, so it needs more posterior bone height. If your ridges are resorbed, choosing All-on-6 may commit you to a sinus lift or graft — extra cost and months of healing. If you have generous, dense bone, you are a candidate for either.
2. Bite — how hard you chew and whether you grind
- Average bite, no grinding: All-on-4 carries your bite comfortably for decades.
- Heavy bite or bruxism: the extra load-spreading of All-on-6 reduces stress on each implant — this is where the premium is most justified.
- Long arch or large jaw: a longer span benefits from six support points.
3. Budget
If your bone supports either and budget is tight, All-on-4 delivers the same fixed teeth for £1,500–£2,500 less per arch. If you can afford All-on-6 and the bone is there, the premium buys a durability margin many patients value. Budget should never push you toward the cheaper option if your anatomy needs six implants — nor toward the dearer one if four is the right answer.
A quick guide to where you probably fall
| Your situation | Likely recommendation |
|---|---|
| Moderate bone loss, want to avoid grafting | All-on-4 |
| Dense, healthy bone and a heavy/grinding bite | All-on-6 |
| Tight budget, suitable bone | All-on-4 |
| Long arch / large jaw, good bone | All-on-6 |
| Long-term denture wearer, significant resorption | Often All-on-4 |
Treat this as a starting point, not a diagnosis. The honest truth is that the right answer comes from a CBCT scan and an examination — everything else is educated guesswork. Our full candidacy guide goes deeper into each factor.
The one rule that protects you
Be cautious of any clinic that recommends the more expensive All-on-6 without showing you a 3D scan and explaining why your bone needs it — and equally wary of one pushing the cheapest option to win your booking. A trustworthy clinic recommends the procedure your anatomy supports and stands behind it with a written guarantee.
How to get a clear answer
You do not need to fly anywhere to find out which procedure suits you. At Taki Dent in Antalya we offer a free remote assessment: send us your X-rays or scans and a few details, and we will give you an honest recommendation — All-on-4 or All-on-6 — with the reasoning explained, plus a fixed all-inclusive quote. No pressure, and no upselling.
Frequently asked questions
How do I know if I need All-on-4 or All-on-6?
It is decided by bone, bite and budget. All-on-4 suits moderate bone loss and avoids grafting; All-on-6 needs more posterior bone but suits heavy bites and longer arches. A CBCT scan confirms which is right.
Can I choose All-on-6 if my dentist suggests All-on-4?
You can discuss it, but if your posterior bone is limited, All-on-6 may need grafting and extra healing for no real benefit. A good clinician explains the reasoning on your 3D scan.
What if I have worn dentures for years?
Long-term denture wearers often have significant bone loss, which usually points toward All-on-4. A CBCT scan shows how much bone remains and which procedure is safe.