Degree of polarization uniformity for dental calculus visualization

Tien Yu Hsiao, Yi Ching Ho, Shyh Yuan Lee, Chia Wei Sun*

*Corresponding author for this work

Research output: Contribution to journalLetterpeer-review

1 Scopus citations


During the treatment for periodontitis, the removal of dental calculus is essential. Previously, we have proposed the DAM algorithm for intuitive identification of the site of lesion, enabling the non-contact assessment during the operation. Nonetheless, the delineation of dental calculus was still imperfect. To this end, here we utilized the power of polarization-sensitive optical coherence tomography and evaluated the contrast called degree of polarization uniformity for dental calculus visualization. The result showed that the selected index demonstrated excellent contrast of dental calculus from other normal dental hard tissues. The proposed contrast is promising for accurate dental calculus delineation.

Original languageEnglish
Article numbere202200011
JournalJournal of Biophotonics
Issue number6
StatePublished - Jun 2022


  • degree of polarization uniformity
  • dental calculus
  • depolarization
  • polarization-sensitive optical coherence tomography


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