Implants can be used to replace a single tooth, to stabilize a full or partial denture, or provide anchorage for tooth movement in orthodontics.  Implants look like a screw in bone on x-rays.  An abutment is attached to the implant internally with an implant screw.  An implant crown is then cemented or screwed onto the abutment cylinder.  Implants have a very high success rate as they do not get decayed like teeth!  Implants preserve bone which is esthetically desirable and functionally desirable for keeping partials or dentures in place while eating and speaking.