Wisdom tooth cavities that have rotted and hollowed out won’t fall out on their own. Even if it falls out, it will only be a part of the tooth that is rotten, and the root will still be inside. Wisdom tooth cavities that have rotted out indicate that the wisdom tooth is decayed, and decay generally does not lead to the loss of the tooth. Because the root of the tooth is healthy at this time, firmly growing in the tooth socket, even if the crown is rotten, it will not fall off by itself. General tooth loss, often after periodontal disease, alveolar bone height is significantly reduced, part of the root is exposed, the teeth loose serious, may fall out. Usually must pay attention to personal hygiene, keep the oral cavity clean, after the extraction of teeth need to observe more physical recovery.