The exploding tooth thing is true, caused by gases released by the decay building up pressure, can be very very painful: https://en.wikipedia.org/wiki/Barodonta

The exploding tooth thing is true, caused by gases released by the decay building up pressure, can be very very painful: https://en.wikipedia.org/wiki/Barodontalgia#Barotrauma https://en.wikipedia.org/wiki/Barodontalgia#Barotrauma