All-on-X is the umbrella term for full-arch dental restorations anchored by a fixed number of implants — the "X" is the implant count (4, 6, or 8). Instead of replacing every missing tooth with an individual implant, All-on-X secures a complete arch of prosthetic teeth onto a smaller number of strategically placed implants. It's the most transformative procedure in modern dentistry for patients who've lost most or all of their teeth — and one of the areas where Colombia's cost advantage is most dramatic.
What All-on-X Means
The concept is straightforward: a full arch of teeth (typically 10–14 teeth per arch) is permanently fixed to 4, 6, or 8 implants embedded in the jawbone. The implants act as anchors; the prosthetic bridge is screwed or cemented onto the implants. The result looks, feels, and functions like natural teeth — you eat, speak, and smile normally, and the prosthetic doesn't come in and out like a denture.
All-on-4
The original protocol, developed by Dr. Paulo Maló: four implants per arch, with the posterior two angled at 30–45 degrees to maximize bone contact without needing sinus lifts or bone grafts. This angulation allows the implants to engage more bone and support a full bridge with fewer implants.
Best for: Patients with moderate bone loss who want to avoid bone grafting, those seeking the most cost-effective full-arch solution, and patients whose bone density can support a four-implant configuration.
All-on-6 and All-on-8
All-on-6 and All-on-8 use more implants to distribute chewing forces across a wider area. More implants mean more points of support, which can extend the longevity of the prosthetic, allow a more natural force distribution during chewing, and provide redundancy (if one implant fails, the bridge is still supported).
All-on-6 is the most commonly recommended option for patients who can accommodate six implants — it balances cost, biomechanical stability, and long-term durability. All-on-8 is reserved for patients with excellent bone who want maximum support and longevity.
Candidacy
| Configuration | Bone Requirement | Bone Grafting Needed? | Best For |
|---|---|---|---|
| All-on-4 | Moderate bone available; posterior angulation compensates | Rarely | Cost-sensitive; moderate bone loss |
| All-on-6 | Good bone volume in 6 positions | Sometimes (sinus lift) | Best balance of cost and durability |
| All-on-8 | Excellent bone volume throughout | Occasionally | Maximum longevity; patients who can invest |
Your dentist will determine the right configuration based on a CBCT (cone-beam CT) scan of your jaw, which maps bone density and volume at each potential implant site. The scan — not a formula — determines whether you need 4, 6, or 8 implants.
Cost in Colombia
| Configuration | Colombia (typical 2026, per arch) | United States (per arch) |
|---|---|---|
| All-on-4 (acrylic bridge) | $5,000–$8,000 | $15,000–$25,000 |
| All-on-4 (zirconia bridge) | $7,000–$11,000 | $20,000–$35,000 |
| All-on-6 (zirconia bridge) | $9,000–$14,000 | $25,000–$40,000 |
| All-on-8 (zirconia bridge) | $11,000–$17,000 | $30,000–$50,000 |
How to Choose
The right number isn't about preference — it's about anatomy. A dentist recommending All-on-4 for every patient regardless of bone volume is applying a protocol, not personalizing care. Similarly, a dentist who always recommends All-on-8 may be over-treating. The CBCT scan and clinical examination determine the optimal configuration for your specific jaw.
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