Detection of enamel subsurface lesions by swept-source optical coherence tomography

Sumiyo Suzuki, Yu Kataoka, Masafumi Kanehira, Mikihiro Kobayashi, Takashi Miyazaki, Atsufumi Manabe

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


This study aimed to non-destructively analyze the progression of subsurface enamel caries using swept-source optical coherence tomography (SS-OCT), a recently developed imaging analysis modality. Artificial enamel caries at various stages of demineralization were created in bovine tooth enamel using a modified lactic acid gel system. Untreated enamel served as a control. OCT images from cross-sections of enamel were collected. Mineral density, distribution, and histological changes were analyzed using an electron probe microanalyzer, scanning electron microscopy, and contact microradiography. The Raman spectrum and X-ray structural analysis of the enamel surfaces were determined. SS-OCT detected significant differences in mineral loss among the samples. A high-brightness image was confirmed, along with changes in the respective brightness graphs proportionate to the degree of demineralization. SSOCT can potentially be used to evaluate the progression of incipient enamel carious lesions.

Original languageEnglish
Pages (from-to)303-310
Number of pages8
JournalDental materials journal
Issue number2
Publication statusPublished - 2019


  • Dental caries
  • Dental enamel
  • Diagnostic imaging
  • Lasers
  • Tooth demineralization

ASJC Scopus subject areas

  • Ceramics and Composites
  • Dentistry(all)


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