1. What do you think about charcoal tooth pastes? I've been using this[1] and it got rid of my persistent "plaque wall" on lower incisors within ~month. I don't feel this particular one is really abrasive, but I was wondering will there be some damage to enamel with persistent use? Should I maybe alternate it with normal fluoride paste?

2. I've heard that brushing teeth before sleeping, regardless of food consumption, is great because of reduced saliva during rest means reduced anti-bacterial effects of it. Any truth in that?

3. Last dentist appointment I got mentioned that my tooth will literally explode if I don't remove it. I've read there been odd cases of that happening in history, but is there realistic chance of that happening? How would that even come to pass?

[1] https://www.splatoralcare.uk/products/biomed-charcoal-toothp...

P.S. Thanks for doing AMA. I've had nothing but horrible experience talking with dentists, or even bad experiences in general.