What should I do after a tooth is extracted? Many people think that after a tooth is removed, as long as the wound heals, it will be fine. This kind of understanding is not correct. After the tooth is extracted, a gap is left in the middle of the dentition. If it is not filled in time, it will be opposite to the tooth that was extracted. Due to the lack of antagonism, the teeth will be significantly elongated, and the teeth on both sides of the gap are also inclined towards the gap. It will inevitably cause a large gap between the teeth. This kind of gap is easy to impact food, and periodontal disease or caries will appear over time. Extraction of permanent teeth in adolescence without timely placement of teeth can cause more tooth displacement, dislocation of teeth, and life-long pain. Theoretically speaking, after tooth extraction, the alveolar bone loses the stimulation of the physiological chewing function and will gradually shrink, and it will take about 2 months to reach a stable level. It is generally believed that this is the most suitable time for dentures. Certain crowded teeth do not need dentures because there is no place for them after extraction. And the “end of the tooth” is that the third molar does not need to be inserted after the third molar is extracted.