All on Four dental implants are similar to traditional implants but aim to replace dentures instead of single teeth. As opposed to supporting one tooth with one metal post, this type of implant supports all the teeth on the lower or upper jaw. They do this by angling the rods to the thick, healthy bone at the front of the mouth. All on Four dental implants aren't applicable for someone who only needs one or two teeth replaced. However, they can be a wonderful solution for someone who uses or is considering using dentures.