Understanding the Difference: All-on-4 vs. All-on-6
If you're exploring full mouth dental implants, two of the most commonly recommended approaches are All-on-4 and All-on-6. Both replace an entire arch of teeth using a fixed prosthesis anchored to implants — but there are meaningful differences in how they work, who they're best suited for, and what they cost.
How Each System Works
All-on-4
All-on-4 uses four implant posts per arch to support a full set of teeth. Two implants are placed vertically at the front of the jaw, and two are placed at an angle (up to 45°) toward the back. This angled placement allows the implants to engage more bone without requiring a bone graft in many cases — making it a popular option for patients with some bone loss.
All-on-6
All-on-6 uses six implant posts per arch, all typically placed vertically. The additional implants provide a wider distribution of bite force across the jaw, which many clinicians consider advantageous for long-term stability and load management — particularly for the posterior (back) region.
Side-by-Side Comparison
| Feature | All-on-4 | All-on-6 |
|---|---|---|
| Implants per arch | 4 | 6 |
| Bone graft often needed? | Less frequently | More frequently |
| Typical cost per arch | $12,000 – $25,000 | $15,000 – $30,000 |
| Best for | Moderate bone loss, budget-conscious patients | Good bone volume, higher stability needs |
| Load distribution | Good | Better (more support points) |
| Surgery complexity | Moderate | Moderate to high |
Which Option Is Clinically Superior?
Neither approach is universally "better." The right choice depends on:
- Your bone density and volume: Patients with significant bone loss may be better candidates for All-on-4 due to the angled implant placement.
- Your bite force: Patients with heavy chewing habits or bruxism (teeth grinding) may benefit from the added support of All-on-6.
- Your budget: All-on-4 is generally less expensive due to fewer implants and potentially fewer preparatory procedures.
- Your provider's recommendation: A qualified implant specialist will review your CT scans and medical history to recommend the appropriate system.
What About Snap-On Dentures?
A third option worth mentioning is implant-retained (snap-on) dentures, which use 2–4 implants per arch to anchor a removable denture. This is a lower-cost alternative but doesn't offer the same fixed, permanent feel as All-on-4 or All-on-6.
Questions to Ask Your Dentist
- Based on my imaging, am I a candidate for both approaches?
- Will I need bone grafting regardless of which I choose?
- What prosthetic material do you recommend, and why?
- What does your long-term follow-up and warranty policy look like?
Getting a second opinion before committing to either procedure is always a reasonable step. Both All-on-4 and All-on-6 are well-established, effective treatments — the best one is the one properly matched to your anatomy and goals.