Falling Teeth
Scholars have said that seeing all teeth falling out in a dream is interpreted according to the dreamer's situation; if their household members are ill, they may perish while the dreamer remains; if wealthy, their wealth may be lost; if poor, those represented by their teeth may die while they remain. As for a single tooth falling out without treatment, it may indicate the death of a sick family member or a financial loss. If the tooth is taken in hand or garment, it may suggest a pregnancy or reconciliation with a relative, noting that accompanying blood may indicate the sin of severing kinship ties or efforts to repay a debt.
Per Ibn Sirin's Muntakhab al-Kalam fi Tafsir al-Ahlam