The total luminescence of bovine and human dental enamel

The corrected emission and excitation spectra of human and bovine dental enamel and its separated organic material were determined at room temperature and liquid nitrogen temperature. In both materials three distinctluminescence peaks were found in the region 350–360 nm, 405–410 nm, 440–450 nm. The intensity ratios of the peaks of the enamel do not differ substantially upon removal of the inorganic component. Hence a conclusion is confirmed that the organic component is the most responsible material for the total luminescence of the enamel. Several hypothesis are available for determination of the nature of luminescence of the organic components. Differences in the excitation spectra are discussed. Phosphorescence emission and phosphorescence lifetimes were determined.

[1]  J. Hefferren,et al.  Study of Fluorescent Characteristics of Extracted Human Teeth by Use of a Clinical Fluorometer , 1970, Journal of dental research.

[2]  C. Bachman,et al.  Fluorescence of Bone , 1965, Nature.

[3]  H. Steen.  LUMINESCENCE OF L‐TRYPTOPHAN IN THE DRY STATE AND IN AQUEOUS SOLUTION INDUCED BY X‐RAYS AND U.V.‐LIGHT AT 77°K , 1968 .

[4]  S. A. Mancewicz,et al.  CHARACTERISTICS OF INSOLUBLE PROTEIN OF TOOTH AND BONE. I. FLUORESCENCE OF SOME ACIDIC HYDROLYTIC FRAGMENTS. , 1964, Archives of oral biology.

[5]  S. Lehrer,et al.  Ultraviolet irradiation effects in poly-L-tyrosine and model compounds. Identification of bityrosine as a photoproduct. , 1967, Biochemistry.

[6]  J. Hefferren,et al.  Fluorescence of glycyl peptides and collagen degradation mixtures , 1973, Calcified Tissue Research.

[7]  M. Kronman,et al.  THE FLUORESCENCE OF NATIVE, DENATURED AND REDUCED‐DENATURED PROTEINS * , 1971 .

[8]  J. T. ten Bosch,et al.  The absorption and scattering of light in bovine and human dental enamel , 2006, Calcified Tissue Research.

[9]  K C HOERMAN,et al.  PHOSPHORESCENCE OF CALCIFIED TISSUES. , 1964, Archives of oral biology.

[10]  W. G. Armstrong.  Fluorescence characteristics of sound and carious human dentine preparations , 1963 .

[11]  F. Keeley,et al.  Isolation of dityrosine from an alkali-soluble connective tissue protein. , 1972, Biochimica et biophysica acta.

[12]  R. Steiner,et al.  Excited states of proteins and nucleic acids , 1972 .

[13]  W. G. Armstrong,et al.  Isolation and properties of fluorescent components associated with calcified tissue collagen , 1971, Calcified Tissue Research.