Affiliations: Leibniz-Institut für Polymerforschung Dresden e.V., Dresden, Germany | Department of Oral and Maxillofacial Surgery, University Hospital “Carl Gustav Carus”, Technische Universität Dresden, Dresden, Germany
Note: [] Address for correspondence: Ulrich Scheler, Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, D-01069 Dresden, Germany. Tel.: +49 351 4658 275; Fax: +49 351 4658 231; E-mail: [email protected]
Abstract: High-resolution solid-state NMR based on combined rotation and multipulse spectroscopy (CRAMPS) has been applied to study chemical structures of dental tissues. The samples of human enamel, crown dentine and root dentin studied in this work were used without chemical pre-treatment. The quantitative 1H NMR spectra permit an assignment to different structures and a quantification of the content of hydroxyl groups. While there is 40% hydroxyl content in the enamel, there is significantly less in the dentin, 14% in the crown and 9% in the root. Thus this study provides the direct evidence of OH− ion deficiency in all dental tissues supporting earlier findings that bone and dental mineral apatite is poorly hydroxylated.
