Instead of placing one implant for each tooth, the All-on-four implants concept advocates placing four implants to restore the full arch. Following the implant placement, the entire dentition is replaced with the help of bridges or dentures, which are fabricated to fit the implants. This can provide a full set of teeth to the patient in a single day as they work on immediate loading. This allows shorter treatment time, less discomfort, and is subsequently more cost-effective.