Abstract
The reflectance and transmission of thin slabs of dental enamel has been measured at all wavelengths between 220 and 700 nm by means of an integrating sphere. From the results the true scattering and absorption coefficients have been computed. The theoretical model used is an extended two-flux model, which is presented and discussed. The absorption spectrum of the dissolved organic component of enamel was also determined. An absorption peak at 270 nm is common to all the spectra. This peak in the bovine enamel spectrum is about three times as high as in the spectrum of human enamel. The peak of the dissolved material is about as high as the peak of the corresponding enamel. Hence it is concluded that the organic component, presumably aromatic amino acids, is responsible for most or all of the observed optical absorption.
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References
Barenboim, G. M., Domanskii, A. N., Turoverov, K. K.: Luminescence of biopolymers and cells, p. 18–75. New York-London: Plenum Press 1969
Brinkworth, B. J.: On the theory of reflection by scattering and absorbing media. J. Phys. D.: Appl. Phys.,4, 1105–1106 (1971)
Chandrasekhar, S. Radiative transfer, p. 9. New York: Dover 1960
Egan, W. G., Hilgeman, T., Reichman, J.: Determination of absorption and scattering for nonhomogeneous media: II. Experiment. Appl. Opt.12, 1816–1821 (1973)
Gate, L. F.: The determination of light absorption in diffusing materials by a photon diffusion model. J. Phys. D.: Appl. Phys.4, 1049–1056 (1971)
Helmcke, J. G.: Ultrastructure of enamel. In: Structural and chemical organisation of teeth (Miles, A. E., ed.), vol. II, p. 135–163, New York and London: Academic Press 1967
Klein, J. D.: Radiation heat transfer through scattering and absorbing nonisothermal layers. Techn. Rept. NASA SP-55, 73–81 (1965)
Klier, K.: Absorption and scattering in plane parallel turbid media. J. opt. Soc. Amer.62, 882–885 (1972)
Kristiansen, G. K.: Zero of arbitrary function. BIT3, 205–207 (1963)
Kubelka, P.: New contribution to the optics of intensely light-scattering materials. Part I. J. opt. Soc. Amer.38, 457–488 (1948)
Mudgett, P. S., Richards, L. W.: Multiple scattering calculations for technology. Appl. Opt.10, 1485–1501 (1971)
Orchard, S. E.: Reflection and transmission of light by diffusing suspensions. J. opt. Soc. Amer.59, 1584–1597 (1970)
Posner, A. S., Perloff, A.: Apatites deficient in divalent cations. J. Res. Nat. Bur. Stand.58, 268–279 (1957)
Reichman, J.: Determination of absorption and scattering coefficients for nonhomogeneous media. I. Theory. Appl. Opt.12, 1811–1815 (1973)
Smillie, A. C.: The chemistry of the organic phase of teeth. In: Biological mineralisation (Zipkin, I., ed.), p. 139–163. New York: John Wiley & Sons 1973
Spitzer, D., Ten Bosch, J. J.: A simple method for determination of the reflection coefficient at the internal surfaces of turbid slabs. Opt. Comm.9, 311–313 (1973)
Walsh, J. W. T.: Dept. Sci. Int. Res. (Gr. Brit.)10, Res. Comm., Techn. Paper No2, 10 (1926)
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Spitzer, D., Ten Bosch, J.J. The absorption and scattering of light in bovine and human dental enamel. Calc. Tis Res. 17, 129–137 (1975). https://doi.org/10.1007/BF02547285
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DOI: https://doi.org/10.1007/BF02547285