When a full set teeth replacement is required, certain dentists and specialists may often recommend six or more dental implants to support the prosthesis, and would undertake the treatment in multiple stages. All-On-4 is different in that only four fixtures are used to support the teeth, and the treatment is immediate with the final prosthesis being typically delivered within 24 hours of the surgery. So not only less implants are being used, but also these are immediately loaded, and the natural question arises are we pushing the limits? Would it be better to use more implants and to do it in stages? Actually, the answer is quite the opposite. Staged, multi-implant systems have been around for many years, but the trend among experienced clinicians has been to use less implants and to undertake immediate loading with the ultimate aim of achieving a better outcome. So All-On-4 is actually a product of evolution (see History of All-On-4). Nonetheless, All-On-4 is an advanced sur...
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