Medically reviewed by Dr. José Moguel · Last reviewed September 1, 2026.
| Feature | All-on-4 | 3-ON-8 signature design |
|---|---|---|
| Implants | Four per treated arch | Eight per treated arch |
| Bridge sections | Commonly one full-arch prosthesis | Three segmented bridge sections |
| Published clinic range | $8,000–$12,000 per arch | $16,000–$20,000 full-mouth planning range |
| Temporary teeth | Fixed temporary teeth may be possible for qualifying patients; not guaranteed before evaluation | |
| Final material | Must be identified in the written plan; options and indications vary | |
| Healing | Commonly includes a healing period of several months and a return visit | |
| Maintenance | Both require professional hygiene, examinations, and possible adjustment or repair | |
Why implant count is not the whole decision
Additional implants may change load distribution, but anatomy, bone quality, implant position, prosthetic space, bite, hygiene access, and material design all matter. A design with more implants is not automatically safer or better for every patient.
How segmented bridges can differ
The 3-ON-8 design uses three bridge sections. In some cases, this may permit one section to be serviced separately. Actual repairability depends on implant position, component access, material, and the nature of the problem.
Bone and grafting
All-on-4 posterior implants may be angled to use available bone, but grafting is not always avoidable. An eight-implant plan requires suitable sites or preparatory treatment. CBCT imaging and examination determine candidacy.
Longevity and future cost
No responsible comparison can promise a fixed lifespan or “no replacements.” Both designs can require maintenance, screw replacement, repairs, relines, or prosthesis replacement. Compare the written warranty and long-term service plan.
Questions for the consultation
- Why is this design appropriate for my anatomy and bite?
- What temporary restoration will I receive?
- What is the final bridge material?
- Which components can be serviced independently?
- What are the alternatives if an implant cannot be placed as planned?
- What follow-up will I need after returning home?