Of course, it is superstitious to dream that one's teeth have fallen out, which symbolizes the disaster of one's loved ones. Freud clearly pointed out in his masterpiece The Interpretation of Dreams that it is absurd and wrong to dream that one's teeth will fall out, and the correct explanation should be a symbol of psychological castration.
In the process of dream interpretation, the author has encountered many dreams of tooth loss and found that their meanings are varied. Here I summarize a few popular symbols for your reference:
Dreaming that a tooth has fallen out just symbolizes that there is something wrong with the tooth itself.
Dreaming that a tooth has fallen out symbolizes that there is a problem in interpersonal relationship.
Dreaming that a tooth fell out symbolizes the desire to lose weight.
Dreaming that a tooth fell out symbolizes psychological retrogression.
Dream of losing a tooth, the original firm belief may be shaken.