For the past couple months, I've had a really bad habit of clenching my teeth. And not just tap my teeth together a few times and bite down. I mean REALLY clench down HARD. I have no idea why I do it. But I've been doing it a lot recently. And I asked the dentist about it and she said that can and will definitely traumatize a tooth and damage the roots and s**t. I've been pretty good about brushing, flossing, and using mouth wash for a while now. Definitely don't do it as much as I should but I definitely do it lol.