All-on-4 vs. All-on-6 vs. Implant Dentures: An Honest Comparison
By Dr. Niels Oestervemb, DDS — Double Board-Certified: Implant Dentistry (ABOI/ID) & General Dentistry (ABGD)
When a whole arch needs replacing, you’ll hear three names — and depending on which office you visit, you’ll be told a different one is “the best.” Here’s the version with the incentives removed: they’re different tools, and your bone, budget, and priorities pick the right one, not the brochure.
Snap-in implant denture (overdenture)
Two to four implants with attachments your denture clicks onto. Removable for cleaning, rock-solid while eating and speaking, no adhesive ever again. It’s the most affordable entry into implant stability ($15,000–$20,000 per arch here, implants and denture included) and often the right call for patients prioritizing budget. Honest downsides: it still comes out at night, the attachments need periodic replacement, and chewing power sits below fixed options.
All-on-4
Four implants — the back two placed at engineered angles to use the strong bone most people keep even after years of loss — supporting a fixed full arch. Nothing comes out; you brush it in your mouth; chewing approaches natural teeth; often no grafting needed, which is the design’s quiet genius. This is the proven workhorse of fixed full-arch dentistry, and for most patients it’s the sweet spot of the three ($20,000–$32,000 per arch here, complete — extractions, temporaries, and final arch included).
All-on-6
Same fixed concept, two more implants. Where bone quality and volume allow, the extra support spreads bite forces further, adds redundancy (a strategic advantage over decades), and can suit heavy bites and some lower-arch anatomies especially well. It is not automatically “better” — placing six implants in bone that comfortably supports four adds cost and surgery without adding outcome. When a consult recommends six, the reason should be visible on your scan, in your anatomy. If it isn’t, ask.
The decision, compressed
Budget-led and want life-changing stability tomorrow: snap-in — and note that implants placed for a snap-in can often serve a later upgrade to fixed. Want teeth that are simply teeth again: All-on-4 for most anatomies, All-on-6 where your bone and bite argue for it. The unglamorous truth: this choice is two-thirds anatomy and one-third preference, which is why it should be made looking at your CT scan, not a price menu.
See which option your bone actually supports — the scan is free: book your consult. Full details: All-on-4 · implant dentures · real pricing.