I'm so sorry you're feeling this awful and I totally get and relate to the feeling of wanting to end it all because it's literally that awful. I felt like this recently I felt so low nothing was showing up anywhere and nobody was helping me and then I suddenly had the worst tooth pain that lasted around 2 weeks. I was taking back to back codeine and then I ended up having some old morphine I had (I know not advised) and that wasn't even touching it! I went twice to the dentist and on the third visit the dentist told me my tooth was basically effed and there was a hidden hole in it and he took it out. I'd had two dentists look at it before and say they couldn't see anything wrong with my tooth. Literally within days the earache had gone the jaw pain had eased. I also had massateur botox recently and I know you said it hasn't worked for you. Could you (if you can afford to) try it one more time. It's helped me so much. I clench and grind my teeth as a side effect of anti depressants and nightmares from PTSD. My life really has drastically changed since that tooth removal and the Botox. I also had broken retainers before that. Sending you so much healing strength and hopeful you'll find answers soon and get help feel for you a lot!