I often have this nightmare where I lose all my teeth at once. It’s a very scary feeling. Sometimes, it happens while I brush my teeth in the dream. As I brush my teeth, my teeth fall out just like when I lost my baby teeth, except for all of them come out within 5 seconds. I can even feel the holes with my tongue in the dream. Then I realize that these are my adult teeth and I have to wear false teeth for the rest of my life. It makes me feel desperate..