The Differences Between All-on-4, All-on-6 and All-on-X
If you’re exploring full arch (one set of teeth) dental implants, you’ve likely come across a few popular terms: All-on-4® , All-on-6 or more broadly, “All-on-X” implants.
These are simply terms to refer to the number of implants that an entire arch, or set, of teeth rest on.
- All-on-4® Dental Implants
The All-on-4 treatment concept uses four strategically placed dental implants to support a full arch of replacement teeth. Two implants are placed vertically in the front of the jaw, while two are angled in the back to maximize bone support. This technique often eliminates the need for bone grafting and provides patients with a stable, natural-looking set of teeth—often in just one day. - All-on-6 Dental Implants
Similar to All-on-4® , the All-on-6 approach uses six implants instead of four to secure the full arch. With two additional points of support, patients may benefit from enhanced stability, better force distribution when chewing, and potentially longer-lasting results. This option is often recommended for patients who have adequate bone density and want added reinforcement for their new smile. - All-on-X Dental Implants
“All-on-X” is a broader term that simply means a full-arch restoration supported by “X” number of implants—where “X” can be four, five, six, or more, depending on the patient’s needs. The treatment is fully customized, taking into account jawbone quality, bite alignment, and long-term function. All-on-X gives your surgeon flexibility to design the most effective solution for your specific case, whether you need maximum stability, additional implants for bone health, or a balance between efficiency and strength.
- All-on-X dental implants replace all of the teeth in a jaw using “X” number of strategically placed implants. For example, All-on-4® uses four implants, while All-on-6 uses six. These implants serve as a strong foundation to support a full set of permanent replacement teeth that look, feel, and function like natural teeth.
All of these options are fixed, non-removable implant systems that can restore a complete set of teeth using a minimal number of titanium implants.
Which Option is the Best for Me?
All-on-4 uses four strategically placed implants to secure a full arch of teeth. Because it requires fewer implants, treatment can sometimes be more cost-effective and may involve fewer surgical steps. All-on-4 is often ideal for patients with moderate bone density, since the angled placement of the back implants helps maximize available bone and may reduce the need for bone grafting.
For All-on-6, the two additional implants can provide enhanced stability, better distribution of bite force, and more stimulation for the jawbone, which helps protect against future bone loss. This option may be recommended for patients with lower bone density, stronger bite force, or those who want added long-term security.
Ultimately, the decision between All-on-4 and All-on-6 depends on factors such as your bone quality, gum health, oral history, and budget. Patients with sufficient bone density may do well with either approach, while those with more advanced bone loss or complex needs may benefit from the extra reinforcement of All-on-6.
The most important thing to remember is that there isn’t a one-size-fits-all answer. The number of implants is determined by your unique anatomy and goals, and a thorough consultation with your dental implant team at Smart Arches will reveal the best option for your long-term health and confidence.
