Two of the most commonly used dental implants are endosteal implants and all-on-4 implants. Endosteal implants are the most common dental implant option. They are comprised of a titanium metal rod that is installed into the jawbone and a supporting post that is specifically designed to secure either a dental crown or a dental bridge.  All-on-4 implants are a dental implant system in which an entire top or bottom denture is supported on just four implants. Each implant is strategically placed so that the replacement teeth remain steady and secure. The advantage of using four implants is that it helps promote faster patient recovery and reduces the likelihood of complications from possible implant failure.