Incidence of Complications in Immediate Loading Conometric Versus Screw-Retained Full-Arch Prostheses: Retrospective Study on 1,356 Implants.

This article focuses on comparing clinical complications and success rates of immediately loaded full-arch implant prostheses retained by either conometric or screw-retained methods. In a retrospective study of 203 patients with 1,356 implants supporting 261 fixed prostheses (65 conometric and 196 screw-retained), both retention types demonstrated high implant survival (98%) and prosthesis success rates (89.3%) over a mean follow-up of 28.5 months, with no significant differences in implant survival or overall prosthetic success. Screw loosening was the most common complication (4.2%) across both groups, while prosthesis detachment occurred exclusively in 9.2% of conometric prostheses. The study concludes that conometric retention offers a viable alternative to screw retention in immediate loading protocols, though further prospective research with longer follow-up is needed to establish definitive clinical guidelines.