Materials characterization expert and problem solver at Covalent Metrology.
lylegordon.ca
I don't know too much about the bacteria stuff. Regarding enamel, the native structure is very intricate and contributes to the properties. Most of the acellular chemical reminalization just deposits disorganized minerals on the teeth. It might be improved vs. doing nothing (I'm not sure but I do use fluoride reminalization from the dentist) but its not regenerating your enamel. Imagine just slapping some concrete or mortar all over a slowly decaying intricate brick wall vs. rebuilding the brick structure; you may mitigate complete collapse but you didn't fix the decaying brick wall.
I thought the insect breathing work at the synchrotron was cool https://www.science.org/doi/10.1126/science.1078008
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