Implant supported prosthesis are a excellent alternative for patients who are reluctant to use RPDs.

Implant restorations may be either screw retained or cemented.

Cemented prosthesis offer simplicity and good control of morphology but can be considered if removal or no re-servicing is needed.

Two types are a cemented post and core that a crown is luted to and the other is a screw retained core that the crown is luted to.

The screw-retained prosthesis can withstand greater occlusal forces and is retrievable for servicing or replacing failing components.

Screw retained prosthesis are dependent on proper implant placement but the use of angle abutments can correct this problem.

The diameter of root-form implants is smaller than natural teeth, and the emergence of the restorations must be progressively flared to achieve proper morphology.

Limited interocclusal space and implant placement may dictate restoring posterior teeth as premolars, selecting a short abutment or UCLA abutment, or overlapping the crowns over the ridge.

The final abutment selection is best assisted with a diagnostic waxup and provisionals.