Time-correlated single-photon counting fluorescence lifetime confocal imaging of decayed and sound dental structures with a white-light supercontinuum source

G. McConnell, J.M. Girkin, S.M. Ameer-Beg, P.R. Barber, B.V.A. Banerjee, D.T. Watson, R. Cook

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

We report the demonstration of time-correlated single-photon counting (TCSPC) fluorescence lifetime imaging (FLIM) to ex vivo decayed and healthy dentinal tooth structures, using a white-light supercontinuumexcitation source. By using a 100 fs-pulsed Ti:Sapphire laser with a low-frequency chirp topump a 30-cm long section of photonic crystal fibre, a ps-pulsed white-light supercontinuum was created. Optical bandpass interference filters were then applied to this broad-bandwidth source to select the 488-nm excitation wavelength required to perform TCSPC FLIM of dental structures. Decayed dentine showed significantly shorter lifetimes, discriminating it from healthy tissue and hard, stained and thus affected but noninfected material. The white-light generation source provides a flexible method of producing variable-bandwidth visible and ps-pulsed light for TCSPC FLIM. The results from the dental tissue indicate a potential method of discriminating diseased tissue from sound, but stained tissue,which could be of crucial importance in limiting tissue resection during preparation for clinical restorations.
LanguageEnglish
Pages126-136
Number of pages10
JournalJournal of Microscopy
Volume225
Issue number2
DOIs
Publication statusPublished - Feb 2007

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Photons
Optical Imaging
Tooth
Fluorescence
Light
Optics and Photonics
Aluminum Oxide
Lasers

Keywords

  • PACS
  • 42.62.Be Biological and medical applications
  • 42.65.-k nonlinear optics
  • 87.64.Ni optical absorption
  • magnetic circular dichroism
  • fluorescence spectroscopy

Cite this

McConnell, G. ; Girkin, J.M. ; Ameer-Beg, S.M. ; Barber, P.R. ; Banerjee, B.V.A. ; Watson, D.T. ; Cook, R. / Time-correlated single-photon counting fluorescence lifetime confocal imaging of decayed and sound dental structures with a white-light supercontinuum source. In: Journal of Microscopy. 2007 ; Vol. 225, No. 2. pp. 126-136.
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abstract = "We report the demonstration of time-correlated single-photon counting (TCSPC) fluorescence lifetime imaging (FLIM) to ex vivo decayed and healthy dentinal tooth structures, using a white-light supercontinuumexcitation source. By using a 100 fs-pulsed Ti:Sapphire laser with a low-frequency chirp topump a 30-cm long section of photonic crystal fibre, a ps-pulsed white-light supercontinuum was created. Optical bandpass interference filters were then applied to this broad-bandwidth source to select the 488-nm excitation wavelength required to perform TCSPC FLIM of dental structures. Decayed dentine showed significantly shorter lifetimes, discriminating it from healthy tissue and hard, stained and thus affected but noninfected material. The white-light generation source provides a flexible method of producing variable-bandwidth visible and ps-pulsed light for TCSPC FLIM. The results from the dental tissue indicate a potential method of discriminating diseased tissue from sound, but stained tissue,which could be of crucial importance in limiting tissue resection during preparation for clinical restorations.",
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Time-correlated single-photon counting fluorescence lifetime confocal imaging of decayed and sound dental structures with a white-light supercontinuum source. / McConnell, G.; Girkin, J.M.; Ameer-Beg, S.M.; Barber, P.R.; Banerjee, B.V.A.; Watson, D.T.; Cook, R.

In: Journal of Microscopy, Vol. 225, No. 2, 02.2007, p. 126-136.

Research output: Contribution to journalArticle

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T1 - Time-correlated single-photon counting fluorescence lifetime confocal imaging of decayed and sound dental structures with a white-light supercontinuum source

AU - McConnell, G.

AU - Girkin, J.M.

AU - Ameer-Beg, S.M.

AU - Barber, P.R.

AU - Banerjee, B.V.A.

AU - Watson, D.T.

AU - Cook, R.

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N2 - We report the demonstration of time-correlated single-photon counting (TCSPC) fluorescence lifetime imaging (FLIM) to ex vivo decayed and healthy dentinal tooth structures, using a white-light supercontinuumexcitation source. By using a 100 fs-pulsed Ti:Sapphire laser with a low-frequency chirp topump a 30-cm long section of photonic crystal fibre, a ps-pulsed white-light supercontinuum was created. Optical bandpass interference filters were then applied to this broad-bandwidth source to select the 488-nm excitation wavelength required to perform TCSPC FLIM of dental structures. Decayed dentine showed significantly shorter lifetimes, discriminating it from healthy tissue and hard, stained and thus affected but noninfected material. The white-light generation source provides a flexible method of producing variable-bandwidth visible and ps-pulsed light for TCSPC FLIM. The results from the dental tissue indicate a potential method of discriminating diseased tissue from sound, but stained tissue,which could be of crucial importance in limiting tissue resection during preparation for clinical restorations.

AB - We report the demonstration of time-correlated single-photon counting (TCSPC) fluorescence lifetime imaging (FLIM) to ex vivo decayed and healthy dentinal tooth structures, using a white-light supercontinuumexcitation source. By using a 100 fs-pulsed Ti:Sapphire laser with a low-frequency chirp topump a 30-cm long section of photonic crystal fibre, a ps-pulsed white-light supercontinuum was created. Optical bandpass interference filters were then applied to this broad-bandwidth source to select the 488-nm excitation wavelength required to perform TCSPC FLIM of dental structures. Decayed dentine showed significantly shorter lifetimes, discriminating it from healthy tissue and hard, stained and thus affected but noninfected material. The white-light generation source provides a flexible method of producing variable-bandwidth visible and ps-pulsed light for TCSPC FLIM. The results from the dental tissue indicate a potential method of discriminating diseased tissue from sound, but stained tissue,which could be of crucial importance in limiting tissue resection during preparation for clinical restorations.

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