Quantification of leucite concentration using X-ray diffraction

J. L. Ong, D. W. Farley, B. K. Norling

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

Objectives: This study sought to evaluate the efficacy of using an X-ray diffractometer for the determination of leucite in Finesse, Ceramco II, and IPS Empress porcelains. Methods: An internal standard, copper, was used. Two quantification methods are presented: (1) the generation of a calibration curve using peak height ratios; and (2) the generation of a calibration curve using peak area ratio. Results: The leucite concentration obtained from the peak height versus concentration calibration curve was observed to be statistically different from leucite concentration obtained from the peak area versus concentration calibration curve. Other information obtained from X-ray powder diffraction include the lattice parameters and volume of the unit leucite cell. Significance: The leucite contained in the dental porcelains (Finesse, Ceramco II, and Empress) has expanded a-lattice spacings and contracted c-lattice spacings relative to standard leucite. These changes in the lattice parameters resulted in a net expansion of the leucite cell volume.

Original languageEnglish (US)
Pages (from-to)20-25
Number of pages6
JournalDental Materials
Volume16
Issue number1
DOIs
StatePublished - Jan 2000

Keywords

  • Dental procelain
  • Lattice spacing
  • Leucite
  • X-ray diffraction

ASJC Scopus subject areas

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

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