TY - CONF A1 - Bauer, L. J. A1 - Wieder, Frank A1 - Kupsch, Andreas A1 - Müller, Bernd R. A1 - Kanngießer, B. A1 - Zaslansky, P. A1 - Mantouvalou, I. T1 - Complementary X-ray techniques reveal hidden details in teeth N2 - Within the DFG project ‘IXdent’, first results have been achieved on 2D µXRF and X-ray refraction radiography measurements as well as combined 3D confocal µXRF and µXCT investigations at the interface between filling and bovine tooth tissue. The benefit of multiple analytical techniques and the combination of structural and elemental analysis will be demonstrated. T2 - HZB User Meeting 2021 CY - Online meeting DA - 09.12.2021 KW - Dental materials KW - X-ray refraction KW - Computed tomography KW - X-ray fluorescence PY - 2021 AN - OPUS4-54094 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bauer, L. J. A1 - Wieder, Frank A1 - Kupsch, Andreas A1 - Müller, Bernd R. A1 - Kanngießer, B. A1 - Zaslansky, P. A1 - Mantouvalou, I. T1 - Integrated X-ray techniques for durable dental interzones N2 - Nowadays, teeth are not directly extracted when tooth decay occurs. Whenever treatment of the affected tooth is possible, the carious region is replaced with a suitable filling. The filling material differs according to the position and size of the cavity. Since the restoration will remain in the tooth for many years, a well adhering and sealing interface between filling and healthy tooth tissue is needed. There is continuous development of new materials, but intensive studies of this complex interface between filling and healthy tooth are still lacking. Little is known about possible diffusion of elements from dental materials into healthy tooth tissue forming a socalled interzone with specific chemical and structural properties. The combination of different analytical X-ray methods at synchrotron radiation facilities and in the laboratory enables an extensive structural and elemental investigation of such interzones. While X-ray fluorescence techniques and X-ray absorption spectroscopy yield elemental distributions and localized chemical speciation, X-ray diffraction, refraction and computed tomography add structural information to the full 3D analysis of model and real life tooth samples. Within two DFG funded projects, we develop adapted methodologies and investigate micro-chemical changes in interzones which we hypothesize may lead to sclerotic dentine. T2 - Workshop of the Helmholtz association: MML - "From Matter to Materials and Life" CY - Berlin, Germany DA - 22.11.2021 KW - Dental materials KW - X-ray refraction KW - Computed tomography KW - X-ray fluorescence PY - 2021 AN - OPUS4-54097 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -