When dreaming becomes disturbing, I like that I can 'step back and see' its just a dream. Often comically fake. Then I enjoy the 'show'.
I like being at peace with my dreams and learning of my unconscious from them.
I'd probably interpret tooth loss as one's realizing their mortality.
Although it may signal real tooth decay, and pain intruding on sleep.
Oh, I'm very impressed by modern dental implant progress, laser eye 'surgery', and other medical advancements. . . wow!