A necrotic wobbly tooth does not have to be extracted. It needs to be examined by radiographs. Tooth necrosis shaking need to first observe the specific situation of the teeth, if the teeth are only slightly necrotic, pulp infection and so on, after filming the alveolar bone resorption is not serious. Generally do not have to extract the tooth, usually need to pay attention to personal hygiene to maintain a light diet, diligent brushing and rinsing, you can also choose the regular hospital for root canal treatment. If the necrosis and shaking of the teeth is more serious, the teeth have no value to be retained after the radiographic examination, the teeth can be extracted, and anti-inflammatory drugs can be used to prevent infection, such as metronidazole, before the teeth are extracted. However, preventive medication needs to be carried out under the guidance of a doctor.