ceramics.org

X07MX TIL a startup called "Novamin" marketed a bioglass for toothpaste that can repair damaged enamel; GlaxoSmithKline bought the company in 2010, pulled it from every US toothpaste brand, and now sells it exclusively overseas as Sensodyne Repair and Protect which in the US instead includes fluoride.
VNjk TIL that glass that has been treated with a LASER to create micro-cracks and coated with polyurethane, inspired by nacre (mother of pearl), becomes 200 times stronger