Symptoms of nerve damage caused by extraction of impacted teeth

90% of the lower alveolar nerve injuries are caused by the impacted wisdom teeth extracted from mandible. The incidence rate reported abroad is nearly 1.3%-5.3%. The main causes of occurrence are closely related to the anatomical proximity of the mandibular third molar and mandibular canal. Of course, there are also difficulties in extraction, extraction methods and extraction techniques. When the root apex is close to the mandibular canal, it is difficult to extract teeth, and the wound is relatively large. When using a hammer chisel to split, and when taking deep roots, it is possible to damage the lower alveolar nerve. After the lower alveolar nerve is damaged, it will show incomplete numbness of the lower lip and chin skin, or there are abnormal sensations such as burning, tingling, and ants walking.