I studied dream interpretation as a part of my developmental psychology course. It was SO interesting!! I ended up buying several books to continue learning about it.
According to this ..
Dreaming about your own teeth can symbolize how you perceive yourself in terms of attractiveness or power.
Losing teeth in a dream may mean that you are feeling less attractive or are feeling powerless in some aspect of your life.
There you go, short and sweet lol
There are also some things that say dreaming about losing teeth is a sign of money to come. You know, the old fairy tale stuff