How to stop toothache from cavity

A cavity-related toothache needs dental treatment; temporary relief can come from gentle cleaning, a cold compress, and pain medicine.

A cavity is a demineralized area that can progress into a hole in the enamel and dentine. As decay approaches or reaches the pulp, the living tissue containing nerves and blood vessels, inflammation can cause sensitivity or a persistent toothache.

Rinse gently with warm water, remove trapped food with careful brushing and flossing, and place a wrapped cold compress against the cheek for short periods. Use an over-the-counter pain medicine only as directed on its label and only if it is suitable for you; do not put aspirin or other tablets directly on the gum or tooth. A dentist may remove decayed tissue and place a filling, or if the pulp is infected, clean and seal the root canals before restoring the tooth.

Arrange a dental examination promptly if the pain persists, returns, or is triggered by hot, cold, sweet foods, biting, or pressure. Seek urgent care for facial or gum swelling, fever, pus or a bad taste, difficulty opening the mouth, swallowing, or breathing, or pain that is rapidly worsening. These findings can indicate infection that needs examination, imaging, and treatment rather than home care alone.

Ask which tooth and tissue are causing the pain, whether an X-ray is needed, and whether the cavity can be treated with a filling or needs root canal treatment and a crown or other restoration. Also ask what signs should prompt urgent review and how to protect the tooth while treatment is arranged.