Characterization of three commercial Y-TZP ceramics produced for their High-Translucency, High-Strength and High-Surface Area

Hui Tong, Carina B. Tanaka, Marina R. Kaizer, Yu Zhang

Research output: Contribution to journalArticle

Abstract

Developing yttria-stabilized tetragonal zirconia polycrystal (Y-TZP) with high strength and translucency could significantly widen the clinical indications of monolithic zirconia restorations. This study investigates the mechanical and optical properties of three Y-TZP ceramics: High-Translucency, High-Strength and High-Surface Area. The four-point bending strengths (mean±standard error) for the three Y-TZP ceramics (n=10) were 990±39, 1416±33 and 1076±32 MPa for High-Translucency, High-Strength and High-Surface Area, respectively. The fracture toughness values (mean±standard error) for the three zirconias (n=10) were 3.24±0.10, 3.63±0.12 and 3.21±0.14 MPa m1/2 for High-Translucency, High-Strength and High-Surface Area, respectively. Both strength and toughness values of High-Strength zirconia were significantly higher than High-Surface Area and High-Translucency zirconias. Translucency parameter values of High-Translucency zirconia were considerably higher than High-Strength and High-Surface Area zirconias. However, all three zirconias became essentially opaque when their thickness reached 1 mm or greater. Our findings suggest that there exists a delicate balance between mechanical and optical properties of the current commercial Y-TZP ceramics.

Original languageEnglish (US)
Pages (from-to)1077-1085
Number of pages9
JournalCeramics International
Volume42
Issue number1
DOIs
StatePublished - Jan 2016

Keywords

  • C. Mechanical properties
  • C. Optical properties
  • Edge chipping
  • Monolithic zirconia
  • Y-TZP

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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