Incisor sensitivity and soreness is considered to be caused by trauma, may also be the emergence of dental caries, pulpitis and other diseases, need to actively seek medical examination and treatment. 1. Trauma: If the teeth have been hit by external forces may lead to increased tooth sensitivity, if the situation is not serious, generally do not need too much treatment, a few days later may gradually recover. If the situation is more serious, you may need to consult a doctor for root canal treatment in time. 2. Dental caries: patients with dental caries due to tooth damage may cause irritation to the tooth tissue, so this symptom will occur, generally can be timely medical treatment for filling treatment, the defective parts of the filling can effectively relieve the symptoms. 3. Pulpitis: due to the pulp tissue is stimulated, the pressure of the pulp cavity increases may lead to this symptom, need to consult a doctor for root canal treatment. You should pay attention to your diet and avoid eating spicy and stimulating foods.