Determination of Size and Shape of the Apatite Particles in Different Dental Enamels and in Dentin By the X-Ray Powder Method
- 31 July 1948
- journal article
- research article
- Published by SAGE Publications in Journal of Dental Research
- Vol. 27 (4) , 524-531
- https://doi.org/10.1177/00220345480270041301
Abstract
The size of the apatite particles in 5 samples of dental enamel has been determined by the broadening of X-ray powder diagram lines. Higher dispersion than usual was employed. Figures ranging from some 600 A in a fine human incisor to 250 or 300 A in a human molar were found. Figures far outside this interval quoted in literature may be rejected as incorrect. That a monomolecular surface layer of such small particles constitutes a considerable percentage of the bulk material should be contemplated when a chemical formula for dental enamel is compared with analyses.Keywords
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