Transmission Electron Microscopic Characterization of Hypersensitive Human Radicular Dentin

M. Yoshiyama, Y. Noiri, K. Ozaki, A. Uchida, Y. Ishikawa, H. Ishida

Research output: Contribution to journalArticlepeer-review

91 Citations (Scopus)


Transmission electron microscopy (TEM) and x-ray microanalysis (XMA) were used for the study of the ultrastructure of the lumens of dentinal tubules in superficial layers of dentin specimens obtained by use of a new biopsy technique from both hypersensitive and naturally desensitized areas of exposed root surfaces, in vivo. The TEM images showed clearly that the lumens of most of the tubules were occluded with mineral crystals in naturally desensitized areas, but such lumens were empty and surrounded with peritubular and intertubular dentin in hypersensitive areas. Moreover, electron-dense structures that lined peritubular dentin were observed in the empty lumens of dentinal tubules.

Original languageEnglish
Pages (from-to)1293-1297
Number of pages5
JournalJournal of dental research
Issue number6
Publication statusPublished - Jun 1990
Externally publishedYes

ASJC Scopus subject areas

  • Dentistry(all)


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