| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Biological Materials Science
|
| Presentation Title |
A Novel Compositional Comparison of Crocodilian, Murine, and Human Enamels at the Nanocrystal Scale |
| Author(s) |
Jack Grimm, Cameron Renteria, Arun Devaraj, Dwayne Arola |
| On-Site Speaker (Planned) |
Jack Grimm |
| Abstract Scope |
Enamel is a universal structural material for terrestrial vertebrates. The composition, mechanical properties, and microstructure of enamel can vary widely as species evolve and adapt to their environment. One frequently observed adaptation is a hard, extremely mineralized exterior that is supported by a softer and less dense interior. Spatial differences in the tissue structure, and between animals, must be realized on the fundamental units, the hydroxyapatite mineral nanocrystals. But due to their small dimensions the nanoscale structure has been challenging to characterize. Laser pulse atom probe tomography (APT) is a technique that combines high (~ppm) sensitivity across the entire periodic table with nm-level resolution to produce three-dimensional reconstructions of a small sample volume. Here, we adopt APT to compare the nanoscale composition of enamel crystallites from mice, humans, and the primitive enamel of a saltwater crocodile. A description of the analytical method and efforts to minimize uncertainty are discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Biomaterials, Other, Other |