Optical Properties of Novel Ceramic CAD/CAM Materials

Abstract

Objective: The purpose of this study was to compare the optical properties of newer all ceramic CAD/CAM materials to more established materials on the market. Methods: The following ceramic materials were tested: lithium-disilicate/lithium-aluminum silicate (Tessera, Dentsply/Sirona), lithium disilicate (IPS e.max CAD, Ivoclar Vivadent), gradient 4Y-PSZ/5Y-PSZ (IPS e.max ZirCAD MT Multi, Ivoclar Vivadent), gradient 3Y-TSP/5Y-PSZ (IPS e.max ZirCAD Prime, Ivoclar Vivadent), and 4Y-PSZs (IPS e.max ZirCAD MT, Ivoclar Vivadent; Katana STML, Kuraray; YZ ST, VITA). Ten specimens per material were sectioned from blocks or milled from discs with final thicknesses of 0.5, 1.0, 1.5, or 2.0mm after sintering (Program at S1, Ivoclar Vivadent) or crystallization (Programat P500, Ivoclar Vivadent). Specimens were created in the transition zone for the gradient zirconia materials. Tessera specimens were conventionally crystallized (Program at P500) or speed fired (CEREC SpeedFire, Dentsply/Sirona). Translucency and opalescence parameters were determined using a dental spectrophotometer (VITA Easyshade V, VITA). Data were analyzed using ANOVA/Tukey's tests (alpha=0.05). Results: Significant differences were seen in optical properties based on material or thickness (p<0.05). In general, the glass-ceramic materials had greater translucency and opalescence than the zirconia materials. IPS e.max CAD had a tendency to have great translucency than Tessera at greater thicknesses, and lower opalescence at lesser thicknesses. IPS e.max ZirCAD Prime (transition zone) had a tendency to be less translucent than the other zirconia materials at greater thicknesses, and more opalescent at lesser thicknesses. Conclusions: Differences in translucency and opalescence parameters varied based on the type of ceramic material and thickness.

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Document Details

Document Type
Technical Report
Publication Date
May 20, 2022
Accession Number
AD1186291

Entities

People

  • Christina M. Schiltz
  • Jeremy J. Matis
  • Kraig S. Vandewalle
  • Stephen C. Arnason

Organizations

  • Uniformed Services University of the Health Sciences

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Ceramic Materials
  • Computer-Aided Design
  • Computer-Aided Manufacturing
  • Coordinate Systems
  • Dental Materials
  • Dentistry
  • Education
  • Fabrication
  • Flexural Strength
  • Light Scattering
  • Manufacturing
  • Materials
  • Materials Processing
  • Measurement
  • Optical Properties
  • Oxides
  • Teeth
  • Transitions

Readers

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