Severe Toothache is often a sign of an underlying dental problem, such as tooth decay, infection, a cracked tooth, or an abscess. The pain may be constant or intermittent and can worsen when eating, drinking hot or cold beverages, or applying pressure to the affected tooth. Prompt dental treatment is essential to relieve pain, prevent complications, and protect your oral health. Depending on the cause, treatment may include fillings, root canal therapy, crowns, or other restorative procedures to restore the tooth and eliminate discomfort.