Single-tooth implants can be used in people who are missing one or more teeth. An implant is surgically placed in an opening that is made by your dentist in the jawbone. After the implant integrates (attaches) to your bone, it acts as a new "root" for the crown that will be replacing your missing tooth. A crown (cap), which is made to look like a natural tooth, is attached to the implant and fills the space left in the mouth by the missing tooth.