Dental implants can be used to directly replace the entire portion of a missing tooth. Implants consist of a titanium rod that acts as the original root of your old tooth, and is drilled directly into the jaw bone. Due to its titanium build, it allows bone and tissue cells to freely grow around it, acting as if it were an organic part of the body itself. This particular process is called osseointegration, and effectively cements your new tooth in place.
Dental implants are particularly useful to replace a particular tooth, but can also replace several or the entire set of teeth in your mouth.