Psychological explanation of dreaming of losing one's teeth means that one's relatives are leaving.
Dreaming of tooth loss is a psychological reflection of "aging sorrow" or "abandoning the old for the new". The boy's dream of tooth loss may be a fear of his father.
Dreaming of losing one's teeth also indicates the psychological reflection significance such as "losing face" or "speaking carelessly"
Tooth loss can also express two opposite feelings. One is the sadness of aging, because people will lose their teeth when they get old. The second is the joy of growing up, because when children grow up, their deciduous teeth will fall out and be replaced with new ones. No matter how old the dreamer is, as long as he feels old or old-fashioned, he may dream of losing his teeth. Similarly, as long as he feels that he is growing up, abandoning the old and welcoming the new, he may have a dream of losing his teeth.
Don't trust this too much.