Patients researching full-arch dental implants almost always run into the same two names side by side: All-on-4 and All-on-6. Both promise the same thing — a fixed, permanent set of teeth in a jaw that currently has none, or one that’s about to lose the rest. The difference comes down to one number, and that number matters more than the marketing around it suggests.
What the two techniques actually involve
All-on-4 places four implants in the jaw at specific angles, chosen to make the most of whatever bone is still there without needing a bone graft or sinus lift first. A temporary fixed prosthesis goes on within about three days of surgery, and once the implants have fully integrated with the bone — usually around three months — it’s replaced with the permanent one.
All-on-6 follows the exact same logic with two more anchor points. Six implants spread the load across a wider area of the jaw, which is the whole reason the technique exists: more implants means more distributed support for the final prosthesis. The timeline is the same — temporary teeth in days, permanent teeth after the integration period.
Where they actually differ
The honest answer is: less than the names suggest. Both techniques deliver a fixed, non-removable prosthesis. Both are typically done under local anaesthesia, with sedation or general anaesthesia available for patients who’d rather not be aware of the procedure. Recovery looks the same on both sides — some swelling and discomfort in the first few days, a few months of dietary caution while the implants integrate, then normal eating.
The real difference is structural. Four implants is less surgery, fewer entry points, and — in most cases — a faster, simpler procedure. Six implants means more anchor points carrying the load, which generally translates to a wider margin of support. Whether that margin matters for you specifically comes down to how much healthy bone you actually have, which is exactly what the CT scan during your consultation is for.
Why a dentist might recommend six over four
This isn’t a preference call — it’s a planning decision made from your own anatomy. If there’s enough bone density to support four well-placed implants without compromise, four is usually the simpler, faster, and sufficient option. If the bone is thinner or the load needs to be spread more conservatively — which shows up more often in the upper jaw, where bone tends to be softer than in the lower jaw — a surgeon may plan for six implants instead, to avoid putting too much stress on any single anchor point long-term.
Cost follows the same logic: two more implants is two more components, so All-on-6 tends to cost more than All-on-4. It’s not a premium tier, it’s the price of the extra support your specific jaw might need.
So which one is right for you?
Neither technique is the “better” one in the abstract — they solve the same problem with a different number of anchor points, and the right number is something your CT scan and your surgeon decide together, not something you pick off a price list. If your bone density supports it, All-on-4 gets you to a fixed, permanent smile with less surgery. If your jaw needs broader support to hold up long-term, All-on-6 is the more conservative, structurally sound choice.
Either way, the part that actually decides your outcome is the same: a proper clinical and radiological evaluation before anyone commits to a number.
