A novel method for direct nondestructive diagnosis of caries affected tooth surfaces by laser multiphoton ionization

Natalia Vinerot, Yuheng Chen, Vladimir V. Gridin, Valery Bulatov, Liviu Feller, Israel Schechter*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

A new nondestructive analytical method for diagnosis of tooth caries is presented. The method is based on the Multiphoton Ionization (MPI) fast conductivity signals measured from tooth surfaces. The signals are acquired for a series of laser wavelengths, thus obtaining full MPI spectra. The results indicate a good correlation between the MPI results and the degree of severity of the caries, as diagnosed using traditional inspection. Moreover, the spectral information can be reduced (using least squares fitting) to a single parameter that provides an objective quantitative estimation of the caries severity. The MPI data can be obtained for tiny points on the dental surface and it is suggested that mapping is possible by scanning method.

Original languageEnglish
Pages (from-to)143-150
Number of pages8
JournalInstrumentation Science and Technology
Volume38
Issue number2
DOIs
StatePublished - Mar 2010
Externally publishedYes

Keywords

  • Diagnosis of caries
  • Laser multiphoton ionization
  • Nondestructive
  • Tooth surfaces

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