Optical Coherence Tomography for dental caries detection and analysis

Bennett T. Amaechi, Adrian G. Podoleanu, Gleb Komarov, Susan M. Higham, David A. Jackson

Resultado de la investigación: Conference articlerevisión exhaustiva

16 Citas (Scopus)


The ability of an en-face Optical Coherence Tomography (OCT) system to detect and quantitatively monitor the demineralisation of teeth to produce enamel and dentine (root) caries was determined and validated with an established method of quantifying demineralisation, transverse microradiography (TMR). We used an OCT system which can collect A-scans, B-scans (longitudinal images) and C-scans (en-face images). The development of enamel and root caries, by 3-day demineralisation in acidic buffer solution, was assessed quantitatively every 24 hours. Caries lesions were shown as volumes of reduced reflectivity in both the transversal and longitudinal images. The A-scan, which showed the levels of reflectivity versus the depth of penetration into the tissue, was used for the quantitative analysis of the lesions. Results demonstrated that the reflectivity of tooth tissue decreased with increasing demineralisation time. A linear correlation was observed between the mineral loss in enamel (r=1.0) and dentine (r = 0.957) measured by TMR and the percentage reflectivity loss measured by OCT. We concluded that OCT could detect incipient enamel and root caries and quantitatively monitor the demineralisation of the tissue. The reflectivity loss in tooth tissue during demineralisation, measured by OCT, could be related to the amount of mineral lost during the demineralisation.

Idioma originalEnglish (US)
Páginas (desde-hasta)100-108
Número de páginas9
PublicaciónProceedings of SPIE - The International Society for Optical Engineering
EstadoPublished - ene 1 2002
EventoLasers in Dentistry VIII - San Jose, CA, United States
Duración: ene 20 2002ene 21 2002

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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