Journal of Prosthodontics News
4-Year Clinical Retrospective Analysis in the JOP
In a study in the June issue of Journal of Prosthodontics, Dr. Carl Drago presents the results of a 4-year clinical retrospective analysis of the ratios of cantilever lengths and anterior-posterior spreads of definitive hybrid full-arch, screw-retained prostheses.
One hundred thirty patients with 193 edentulous arches were treated; 774 Nobel Active implants were included in this report. The results of this study indicate that fabricating CAD/CAM titanium frameworks for use in full-arch, screw-retained, hybrid prostheses with CL/AP ratios less than 1.0 resulted in virtually complication-free prostheses. Interim prostheses in the same patient population had 17.1% prosthetic complications. Since the AP spreads were the same for the interim and definitive prostheses, the differences in prosthetic complication rates may be related to the different dental materials used in the prostheses (acrylic resin in the interim prostheses vs. titanium milled frameworks and acrylic resin denture bases in the definitive prostheses).
Citation: Drago C: Ratios of cantilever lengths and anterior-posterior spreads of definitive hybrid full-arch, screw-retained prostheses: Results of a clinical study. J Prosthodont doi:10.1111/jopr.12519
Dated June 13, 2018
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