The Benefits of All-On-4, All-on-6, and All-on-8. There are several benefits of dental implants, and there are three main types: All-on-4, All-on-6, and All-on-8. The All-on-four implant solution eliminates the need for multiple implantations and the painful, expensive, and time-consuming process of making temporary crowns. Aside from its permanent benefit, dental implants are also the most affordable way to replace missing teeth. These options can be used to restore a single tooth or a full set of teeth.