Summary
A study was made of spectra of decalcified human dentine being treated with five decalcifying agents to investigate the differences of infrared spectra of decalcified dentine.
Solutions of 20% 4-Na-EDTA, 5% HNO3, 10% sulfosalicylic acid, 10% CCl3COOH and 10% lithium lactate were used as decalcifying agents. Infrared absorption spectra between 1800 and 650 cm−1 were obtained for the investigation of the absorption strength at 1033,1095; 1412–1414 to 1450–1455; 875–870; 1649 and 1550 cm−1 before and after decalcification.
The specimens following decalcification with EDTA and HNO3 showed almost no influences to the absorption strength at 1649 and 1550 cm−1 of amides. Such absorption spectra were relatively slight in CCl3COOH and sulfosalicylic acid. The absorption strength at 1033 and 1095 cm−1 bands of PO −−−4 may indicate a standard of decalcification. Quick and complete decalcification of dentine was performed by HNO3, CCl3COOH and sulfosalicylic acid but slower and more incomplete decalcification resulted with EDTA and lithium lactate.
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Fukuda, K. Infra-red spectroscopic study for decalcification in the dentine. Histochemie 6, 127–130 (1966). https://doi.org/10.1007/BF00308184
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DOI: https://doi.org/10.1007/BF00308184