Passivity of Fit of a Novel Prefabricated Implant-Supported Mandibular Full-Arch Reconstruction: A Comparative In Vitro Study

Abstract

© 2018 by Quintessence Publishing Co Inc. Purpose: To quantify the strain development of a new prefabricated implant-supported mandibular full-arch reconstruction. Materials and Methods: Five resin models reflecting edentulous mandibles were each restored with three interforaminal implants and prefabricated frameworks with a novel compensation mechanism, cast frameworks, and computer-aided design/computer-assisted manufacturing (CAD/CAM)-fabricated frameworks. Strains were recorded during superstructure fixation. Statistical analyses (analysis of variance, t tests; α = .05) were based on level of misfit and distribution of misfit. Results: Cast restorations showed significantly higher levels of misfit and a significantly more uneven distribution of misfit compared to prefabricated and CAD/CAM restorations (P