You need JavaScript to view this

Secondary mineralization in carious lesions of human dentin. Electron-probe, electron microscope, and electron diffraction studies

Journal Article:

Abstract

Dentinal carious lesions having a remineralized surface layer were studied by means electron-probe microanalysis, electron microscopy, electron diffraction. As the results of electron-probe study, F, Mg, and Na were found to be distributed mainly in the remineralized surface layer and S in the decalcified region where decreases in Ca, P, and Mg concentration were usually observed. The decrease in Mg concentration always started earlier than that of Ca and P concentration. Electron microscope and electron diffraction studies revealed that apatic crystals in the remineralized surface layer were much larger than those in the intact dentin. Although they were less conspicuous, crystals in the decalcified region also were larger than those in the intact region. Dentinal tubules, occluded by many crystals, were frequently seen during the observations. Crystals in the tubules varied in morphology, showing granular, needle, rhomboid, and tabular shapes. By means of electron diffraction, the granular- or needle-shaped crystals were identified as apatite and the rhomboid-shaped crystals as whitlockite. Some of the tabular-shaped crystals appeared to be cotacalcium phosphate.
Authors:
Ogiwara, H [1] 
  1. Tokyo Dental Coll. (Japan)
Publication Date:
Feb 01, 1975
Product Type:
Journal Article
Reference Number:
AIX-07-244488; EDB-76-076780
Resource Relation:
Journal Name: Shika Gakuho; (Japan); Journal Volume: 75:2
Subject:
59 BASIC BIOLOGICAL SCIENCES; DENTIN; ELECTRON DIFFRACTION; BIOMEDICAL RADIOGRAPHY; DENTISTRY; ELECTRON MICROSCOPY; MAN; MINERALIZATION; PATHOLOGICAL CHANGES; TEETH; ANIMALS; COHERENT SCATTERING; DIAGNOSTIC TECHNIQUES; DIFFRACTION; DIGESTIVE SYSTEM; DISEASES; MAMMALS; MEDICINE; MICROSCOPY; NUCLEAR MEDICINE; ORAL CAVITY; PRIMATES; RADIOLOGY; SCATTERING; VERTEBRATES; 551001* - Physiological Systems- Tracer Techniques
OSTI ID:
7358373
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Journal ID: CODEN: SHGKA
Submitting Site:
INIS
Size:
Pages: 256-285
Announcement Date:

Journal Article:

Citation Formats

Ogiwara, H. Secondary mineralization in carious lesions of human dentin. Electron-probe, electron microscope, and electron diffraction studies. Japan: N. p., 1975. Web.
Ogiwara, H. Secondary mineralization in carious lesions of human dentin. Electron-probe, electron microscope, and electron diffraction studies. Japan.
Ogiwara, H. 1975. "Secondary mineralization in carious lesions of human dentin. Electron-probe, electron microscope, and electron diffraction studies." Japan.
@misc{etde_7358373,
title = {Secondary mineralization in carious lesions of human dentin. Electron-probe, electron microscope, and electron diffraction studies}
author = {Ogiwara, H}
abstractNote = {Dentinal carious lesions having a remineralized surface layer were studied by means electron-probe microanalysis, electron microscopy, electron diffraction. As the results of electron-probe study, F, Mg, and Na were found to be distributed mainly in the remineralized surface layer and S in the decalcified region where decreases in Ca, P, and Mg concentration were usually observed. The decrease in Mg concentration always started earlier than that of Ca and P concentration. Electron microscope and electron diffraction studies revealed that apatic crystals in the remineralized surface layer were much larger than those in the intact dentin. Although they were less conspicuous, crystals in the decalcified region also were larger than those in the intact region. Dentinal tubules, occluded by many crystals, were frequently seen during the observations. Crystals in the tubules varied in morphology, showing granular, needle, rhomboid, and tabular shapes. By means of electron diffraction, the granular- or needle-shaped crystals were identified as apatite and the rhomboid-shaped crystals as whitlockite. Some of the tabular-shaped crystals appeared to be cotacalcium phosphate.}
journal = {Shika Gakuho; (Japan)}
volume = {75:2}
journal type = {AC}
place = {Japan}
year = {1975}
month = {Feb}
}