Toothache may cause earache. If caries toothache, deeper cavities occur pulpitis, blood-filled pulp compression of the nerves to produce pain, because there are trigeminal nerves in the pulp, such as the ophthalmic nerve, the maxillary nerve, the mandibular nerve, three branches, the typical symptom of pulpitis is “radiating pain”, that is, pain in the area of the innervation of the trigeminal nerve, the pain is often radiated to the face, the ear and the temporal or upper and lower teeth and other parts. The pain often radiates to the face, ear, and temporal regions or to the upper and lower teeth. Inflammation of the periodontal nerve due to apical and periodontitis can also lead to referred pain, i.e. ear pain. The nerve receptors in the pulp tissue only feel pain, not pressure. Therefore, it may not be possible to determine exactly which tooth is painful when pulpitis occurs. When symptoms of toothache occur, it is important to visit a hospital to identify the cause and give symptomatic treatment so that the symptoms of earache caused by toothache can be improved.