A Comparison Between Screw- and Cement-Retained Implant Prostheses. A Literature Review

Implant-supported restorations can be secured to implants with screws (screw-retained), or
they can be cemented to abutments which are attached to implants with screws (cementretained).
This literature review discusses the advantages and disadvantages of each method
of retention from different aspects. These aspects include: ease of fabrication and cost,
esthetics, access, occlusion, retention, incidence of loss of retention, retrievability, clinical
prosthesis fit, restriction of implant position, effect on peri-implant tissue health,
provisionalization, immediate loading, impression procedures, porcelain fracture, and clinical
performance. Peer-reviewed literature published in the English language between 1955 and
2010 was reviewed using PubMed and hand searches. Since the choice of using either
method of retention is still controversial, this review article offers some clinical situations that
prefer one method of retention over the other. The review demonstrated that each method
of retention has certain advantages and disadvantages; however, there are some clinical
situations in which it is better to select one method of retention rather than the other.