Characterization of a polymer-infiltrated ceramic-network material

AbstractObjectives racterize the microstructure and determine some mechanical properties of a polymer-infiltrated ceramic-network (PICN) material (Vita Enamic, Vita Zahnfabrik) available for CAD–CAM systems. s ens were fabricated to perform quantitative and qualitative analyses of the materialʹs microstructure and to determine the fracture toughness (KIc), density (ρ), Poissonʹs ratio (ν) and Youngʹs modulus (E). KIc was determined using V-notched specimens and the short beam toughness method, where bar-shaped specimens were notched and 3-point loaded to fracture. ρ was calculated using Archimedes principle, and ν and E were measured using an ultrasonic thickness gauge with a combination of a pulse generator and an oscilloscope. s tructural analyses showed a ceramic- and a polymer-based interpenetrating network. Mean and standard deviation values for the properties evaluated were: KIc = 1.09 ± 0.05 MPa m1/2, ρ = 2.09 ± 0.01 g/cm3, ν = 0.23 ± 0.002 and E = 37.95 ± 0.34 GPa. icance CN material showed mechanical properties between porcelains and resin-based composites, reflecting its microstructural components.