Characterization of a polymer-infiltrated ceramic-network material

Alvaro Della Bona, Pedro H. Corazza, Yu Zhang

Research output: Contribution to journalArticle

Abstract

Objectives To characterize the microstructure and determine some mechanical properties of a polymer-infiltrated ceramic-network (PICN) material (Vita Enamic, Vita Zahnfabrik) available for CAD-CAM systems. Methods Specimens were fabricated to perform quantitative and qualitative analyses of the material's microstructure and to determine the fracture toughness (KIc), density (ρ), Poisson's ratio (ν) and Young's 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. Results Microstructural 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 m 1/2, ρ = 2.09 ± 0.01 g/cm3, ν = 0.23 ± 0.002 and E = 37.95 ± 0.34 GPa. Significance The PICN material showed mechanical properties between porcelains and resin-based composites, reflecting its microstructural components.

Original languageEnglish (US)
Pages (from-to)564-569
Number of pages6
JournalDental Materials
Volume30
Issue number5
DOIs
StatePublished - May 2014

Keywords

  • Microstructure
  • Poisson's ratio
  • Polymer-infiltrated ceramic-network
  • Short beam toughness
  • Young's modulus

ASJC Scopus subject areas

  • Materials Science(all)
  • Dentistry(all)
  • Mechanics of Materials

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