Implant-supported versus implant-natural-tooth-supported fixed partial dentures

The use of implants with fixed partial dentures requires that the restorative dentist address a new set of concerns when planning treatment. This paper presents some important issues and evaluates the advantages and disadvantages of each choice, including the decision whether to treat the patient as a totally implant-supported or as a combination case. The special problems of posterior restorations include occlusion, rigid versus nonrigid coupling mechanisms, root intrusion, and screw versus cement retention.