Technically, a dental implant is a small, but very strong post made from biocompatible metals or ceramics, and is made up of three components: the dental implant, the abutment, and the crown.
The dental implant is a small post, usually made of titanium, and similar in shape to screws. Under local anaesthetic, it is surgically inserted into the jawbone, and serves as the first step in the process to replace missing teeth. Once inserted, the dental implant bonds with the natural bone, acts as a substitute for the root of the tooth, and provides the base of support for the one or more replacement teeth, also known as the crowns.
The abutment is a connector that is placed on, or built into, the top of the dental implant, and serves as the connection point and additional support for the crown.
The crown, essentially the replacement tooth, is custom manufactured to match the look, shape, and fit of the other natural teeth, and then installed onto the abutment to complete the replacement process.