Why do I have recurring dreams about this one topic, pulling out my own teeth? first dream: I pull out a tooth of mine but then realize its an adult tooth so I start crying. (nightmare)

second dream: I pull out another tooth but then go into the bathroom, spit into my hand, and then there's a pile of blood and teeth in my hand. (nightmare)

third dream: I pull out both of my top "fangs", whatever the 2 pairs of teeth that are a little more pointier then the rest are called. (neutral dream)

I think I had more then three but these are the ones I can only remember right now.