Clinical oral investigations
Impact of different post-polymerization protocols on fracture load and two-body wear of 3D-printed fixed dental prostheses
Par Gekle S, Stawarczyk B, Mayinger F et 4 autres.
Contenu en anglais
Résumé
Objectives
To evaluate five post-polymerization protocols (385, 400 and 460 nm LEDs; one- and two-capacitor flashlights) and aging on fracture load (FL) and two-body wear (TBW) of three 3D-printed resins for fixed dental prostheses (FDPs).
Materials and methods
360 single-unit FDPs for mandibular molars were DLP-printed from two permanent resins (Varseo Smile CrownPlus [VAR], Crowntec [CRO]) and one temporary resin (Freeprint temp [FRE]). Half was artificially aged (480,000 mastication cycles, thermocycling 5/55°C). FL was measured in a universal testing machine, TBW by laser scanning. Data were analysed with three-way ANOVA, Kruskal-Wallis and post-hoc tests (α = 0.05).