How does a dentist diagnose the cause of a toothache?

When diagnosing the cause of a toothache, a dentist will begin with a thorough examination of your teeth, gums, and mouth. This may include asking about your symptoms, such as the nature and duration of the pain, any associated symptoms, and what seems to trigger or alleviate the discomfort. The dentist may also take X-rays to look for hidden problems, such as cavities, abscesses, or issues with the tooth roots or surrounding bone. In some cases, the dentist might perform tests to check the tooth’s sensitivity or to assess the health of the pulp and nerves inside the tooth.