Who made mouth guards?

Answer 1

Mouth guards are made of durable plastic - and they line the top set of teeth - NOT to keep the teeth from being knocked out - you can still have a tooth knocked out with mouth guard - but instead - a mouth guard stops the lower mandable (jaw bone) from being rammed int the upper mandable - hard enough to cause a knockout. However you STILL can be knocked out with a mouth guard - as most boxers know. It is also used sothat teeth do NOT break against each other - when you are hit from below the lower mandable - going up. Mouth guards were originally made by/for boxers!