Criteria for the evaluation of dental implant success are proposed. These criteria are applied in an assessment of the long-term efficacy of currently used dental implants including the subperiosteal implant, the vitreous carbon implant, the blade-vent implant, the single-crystal sapphire implant, theTübingen implant, the TCP-implant, the TPS-screw, the ITI hollow-cylinderimplant, the IMZ dental implant, the Core-Vent titanium alloy implant, thetransosteal mandibular staple bone plate, and the Brånemark osseointegrated titanium implant. An attempt has been made to standardize the basis for comments on each type of implant.