All-on-4 is the implant technic that use only 4 Implants to support the complete dental arch. This technic has minimal surgery and come out with highly esthetic result. It is suitable for the patients who has few teeth left on the dental arch and condition of the left teeth is not so strong. It is good for the patients that want to avoid extensive bone graft, avoid bone graft on wide maxillary sinus, or avoid bone graft on insufficient bone on lower posterlor mandible. This technic use the anterior bone that usually have more bone on most of the patients to support the 4 implants to make complete dental arch restoration. May be we have to tilt some of the implants to support the posterior restoration. This technic can construct Temporary Restoration support by the newly placed implant and use it immedieatly after surgery. Normally the all-on-4 Technic will restore only 12 teeth and end on first molar. If the patients want to restore 14 teeth and end to second molar,on the case that have enough bone on posterior we can put more 2 implants on the posterior area to get adequate support for the more occlusal force of the restoration and may be called All-on-6 Technic