Toothache is not the spread of cancer. In general, patients do not feel the spread of cancer, and toothache and cancer are not equal. If cancer is diagnosed, whether it has spread or not can only be proved by professional medical institutions and after professional clinical examination and imaging examination. Toothache is only one of the most common symptoms in dentistry, most of the toothache is caused by tooth decay or pulpitis, periapical inflammation. In addition, pericoronitis of wisdom teeth in oral surgery can also cause toothache. Malignant tumors and cancer in the jaw bone may also cause toothache, but the percentage is quite low. Therefore, toothache is not directly related to cancer. It is recommended to go to a regular medical institution for examination to check the cause of toothache.