TY - JOUR
T1 - Transmission Electron Microscopic Characterization of Hypersensitive Human Radicular Dentin
AU - Yoshiyama, M.
AU - Noiri, Y.
AU - Ozaki, K.
AU - Uchida, A.
AU - Ishikawa, Y.
AU - Ishida, H.
PY - 1990/6
Y1 - 1990/6
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0025443224&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0025443224&partnerID=8YFLogxK
U2 - 10.1177/00220345900690061401
DO - 10.1177/00220345900690061401
M3 - Article
C2 - 2355124
AN - SCOPUS:0025443224
SN - 0022-0345
VL - 69
SP - 1293
EP - 1297
JO - Journal of dental research
JF - Journal of dental research
IS - 6
ER -