What is the direct answer?
Home care can temporarily ease cavity pain, but only dental treatment can remove decay and repair the damaged tooth.
What does this question mean?
A cavity is a local loss of enamel and dentine caused by acids made when plaque bacteria use dietary sugars. As decay approaches the pulp, the soft tissue containing nerves and blood vessels, pain may become spontaneous or linger after hot or cold foods.
What can you do next?
Brush gently with fluoride toothpaste and avoid very hot, cold, sweet, or sticky foods on the painful side. Do not put aspirin, alcohol, essential oils, or caustic powders on the gum or tooth, because they can injure oral tissue; book an examination for a filling, pulp treatment, or another repair.
When should you seek dental care?
Arrange care promptly when a cavity aches, because a hole does not close by itself. Facial swelling, fever, pus, a bad taste, difficulty opening the mouth, or trouble swallowing or breathing requires urgent assessment.
What should you ask the dentist?
Ask how deep the decay is, whether an X-ray is needed, and whether the tooth can be restored with a filling or needs pulp treatment and a crown. Ask how to control pain until the appointment and how to protect the other teeth from new decay.
Frequently asked questions
Can salt water cure a cavity?
A mild rinse may clean the mouth, but it cannot remove decay or rebuild a missing part of the tooth.
Why does a cavity hurt at night?
Inflamed pulp can produce spontaneous pain, and lying down may make the sensation more noticeable; examination is needed.

