High doses of sodium fluoride in bones lead to severe softening, by weakening interfacial properties between the inorganic minerals and the organic components, while leaving mineralization unchanged. This leads to reduction of microdamage and associated stress‐whitening pointing to a change in failure mode. Accordingly, elastic modulus, failure stress, and indentation‐distance increase are decreased, whereas failure strain is increased.
Adv. Mater. 2009, 21, 451–457 DOI: 10.1002/adma.200801204