Toothache but can not locate the replacement teeth need to go to the hospital to check the cause of the pain, for acute pulpitis can be taken to determine the pulp vitality test, but there may be other diseases that cause pain. 1. toothache but can not locate the affected tooth can be seen in acute pulpitis, often with radiating pain, pain can not be localized characteristics, the need for clinical examination, clinical often found in the teeth have caries, temperature test compared with the control tooth has a sharp pain response, diagnosis of the need for root canal treatment. 2. toothache may also be triggered by trigeminal neuralgia, can be found after examination of the trigger point, after touching the electric shock-like pinprick pain, lasting a few seconds and disappeared, generally no dental disease, need to follow the doctor’s instructions to take the drug Carbamazepine, or to take the acupuncture, physiotherapy, surgery for treatment. Toothache, it is recommended to go to the dental hospital as soon as possible, timely detection of the cause of treatment.