It turns out that a tooth enamel that is created using biomimetic materials has greater protection than the natural tooth enamel the new material has been designed to replace. The material is being developed by Hewei Zhao and colleagues according to the press release.
New Synthetic Tooth Enamel Is Harder and Stronger Than the Real Thing
From scitechdaily.com
2022-02-06 19:14:07
American Association for the Advancement of Science (AAAS)
Excerpt:
Tooth enamel’s unusual combination of properties is a product of its hierarchical architecture – a complex structure made up of mostly hydroxyapatite nanowires interconnected by an amorphous intergranular phase (AIP) consisting of magnesium-substituted amorphous calcium phosphate. However, accurately replicating this type of hierarchical organization in a scalable abiotic composite has remained a challenge.
Here, Hewei Zhao and colleagues present an engineered enamel that contains the essential hierarchical structure at multiple scales. The artificial tooth enamel (ATE) was produced using AIP-coated hydroxyapatite nanowires, which were aligned using dual-directional freezing in the presence of polyvinyl alcohol. According to the authors, this allowed the engineered structures to have an atomic, nanoscale, and microscale organization like natural enamel.
In a series of tests, Zhao et al. demonstrated that the ATE nanocomposite simultaneously exhibited high stiffness, hardness, strength, viscoelasticity, and toughness, exceeding both the properties of enamel and previously manufactured materials.