The contribution of CO3 3− and CO2 − to the ESR spectrum near g=2 of powdered human tooth enamel
- 1 September 1987
- journal article
- research article
- Published by Springer Nature in Calcified Tissue International
- Vol. 41 (3) , 124-129
- https://doi.org/10.1007/bf02563791
Abstract
The ESR spectrum near g=2 of powdered human tooth enamel from upper central incisors and lower canines was studied as a function of microwave power, irradiation, and storage time. The results clearly demonstrate that the ESR spectrum is composite with at least five paramagnetic species contributing to the signal. The main stable component is assigned to CO2 −. Two other components arise from CO3 3− radicals, one of which is demonstrated to be the same center as is present on a phosphate site in sodium- and carbonate-containing calciumapatite.This publication has 19 references indexed in Scilit:
- Electron Spin Resonance Absorption of Centres with an Orthorhombicg-Tensor in Polycrystalline SubstancesPhysica Status Solidi (a), 1986
- The ESR Spectrum Near G=2 of Carbonated Calciumapatites Synthesized at High TemperatureBulletin des Sociétés Chimiques Belges, 1986
- ESR of Isolated Mn2+ Centers in Alkali ChloridesPhysica Status Solidi (b), 1985
- Long-lived Radicals in Irradiated Apatites of Biological Interest: An e.s.r. Study of Apatite Samples Treated with13CO2International Journal of Radiation Biology, 1985
- ESR of CO 2 − in X-irradiated tooth enamel and A-type carbonated apatiteCalcified Tissue International, 1981
- The caries resistance of human teeth is determined by the spatial arrangement of hydroxyapatite microcrystals in the enamelNature, 1980
- Study of the Arrangement of Crystallites in y-Irradiated Human Enamel by Electron Paramagnetic ResonanceJournal of Dental Research, 1976
- Electron paramagnetic resonance studies of CO ? 2 radicals adsorbed on MgO. Identification and structure of the species using 13C and 17O labellingJournal of the Chemical Society, Faraday Transactions 2: Molecular and Chemical Physics, 1975
- Electron Spin Resonance Absorption Spectra of CO3− and CO33− Molecule—Ions in Irradiated Single-Crystal CalciteThe Journal of Chemical Physics, 1967
- Electron spin resonance absorption spectrum of CO2-molecule-ions in single crystal calciteMolecular Physics, 1964