Can You Lose a Tooth from a Cavity?

Yes, an untreated cavity can eventually lead to tooth loss. Decay can move from the enamel into deeper layers of a tooth. Early treatment may be simpler, but only an examination can show how far a particular cavity has progressed.

How tooth decay progresses

The National Institute of Dental and Craniofacial Research explains that decay begins when acids damage tooth structure. It can progress through enamel and dentin toward the pulp, where nerves and blood vessels are found. The Cleveland Clinic cavity guide describes common symptoms and stages in plain language.

When infection reaches the pulp, inflammation or tissue death can occur. An abscess may develop, and infection can damage the bone around a tooth. The Mayo Clinic overview explains why untreated decay should not be ignored.

Can the tooth be saved?

Treatment depends on the examination findings. General options may include fluoride for early decay, a filling for a cavity, or root canal treatment and a crown when the pulp is involved. The Mayo Clinic treatment guide and the ADA's root canal guide describe these categories. Extraction may be considered when a tooth cannot be restored, but a dentist must evaluate the individual tooth.

Signs to have checked

• New or worsening sensitivity to hot, cold, or sweet foods
• Tooth pain, a visible hole, or a broken area
• Swelling, drainage, or a persistent bad taste
• Difficulty chewing or pain that does not settle

Preventing more decay

Daily brushing with fluoride toothpaste, cleaning between teeth, limiting frequent sugary drinks and snacks, and regular dental visits can lower the risk of tooth decay. The ADA's cavities resource and NIDCR guidance explain these prevention steps.