Screw-Retained vs. Cement-Retained Implant-Supported Restorations

Implant-supported restorations can be attached to implants with screws or can be cemented to abutments, which are in turn secured to implants with screws. Screw-retained implant restorations have always been the authors’ preferred method of securing restorations to implants (Chee et al., Int J Oral Maxillofac Implants 14(1):137–41, 1999). This chapter is written from this perspective, and the advantages and disadvantages of each method of retention are discussed under the following categories: cement entrapment for cemented restorations, retrievability, rotational misfit of abutments and altered screw channels with screw-retained restorations.