How long can you leave a rotten tooth in your mouth?

A rotten or dead tooth can technically stay in your mouth for weeks, months, or even years, but you should never leave it untreated.

Why You Should Not Wait

• No safe timeline: Some teeth fall out or break in weeks, while others stay anchored in the jawbone for years.
• Silent damage: A dead tooth can stop hurting once the nerve dies, but bacteria keep growing inside.
• Hidden infection: Infections can spread silently into your jawbone and gums.

Risks of Leaving It In

• Abscess formation: A pus-filled pocket can form at the root.
• Bone loss: The jawbone supporting the tooth can deteriorate.
• Damage to nearby teeth: Neighboring teeth can decay or shift.
• Systemic illness: Severe oral infections can enter your bloodstream.

Treatment Options

• Root canal: A dentist cleans out the dead pulp, seals the inside, and caps the tooth with a crown to save it.
• Extraction: If the tooth is too decayed to save, the dentist pulls it out to stop the infection. You can learn more about professional care options from providers like Delta Dental.

Leaving a rotten tooth in your mouth can lead to severe local infections, bone loss, tooth loss, and dangerous systemic health issues.

Oral Complications

• Severe infections: Bacteria can reach the soft inner pulp and form a painful dental abscess filled with pus.
• Bone and tooth loss: The infection destroys the jawbone supporting your teeth, causing neighboring teeth to loosen or fall out.
• Chronic pain and odor: You may experience persistent toothaches, extreme sensitivity, and foul-smelling breath.

Systemic Risks

• Spreading bacteria: Bacteria from the rotten tooth can enter your bloodstream.
• Serious conditions: Bloodstream infections can lead to rare, life-threatening conditions like sepsis or heart inflammation.

No, you should not leave a broken tooth for a month, even if it does not hurt.

Risks of Waiting a Month

• Bacterial entry: A break lets bacteria enter the inner layers of the tooth.
• Deep decay: Decay moves fast once the outer enamel layer is gone.
• Painful infection: Bacteria can reach the nerve and cause a painful abscess or pus pocket.
• Worse damage: Chewing on a broken tooth makes the crack grow larger, which can split the tooth entirely.
• Higher cost: A simple fix like dental bonding becomes a root canal, crown, or extraction.

What You Should Do Now

• Call a dentist: Try to get an appointment within a day or two.
• Keep it clean: Rinse your mouth gently with warm water after eating.
• Avoid hard chewing: Do not chew food on the side of the broken tooth.

A rotten or severely decayed tooth should never be left untreated, though it can technically remain in your mouth for weeks, months, or even years without causing noticeable pain.

Even if a damaged tooth feels "quiet" or painless, decay and bacteria continue to progress beneath the surface.

Timeline of Tooth Decay Progression

• 3 to 6 months: Decay usually moves past the outer enamel layer to reach the inner dentin and nerves, often triggering hot and cold sensitivity.
• 6 months to 1 year: Bacteria can penetrate deep into the tooth pulp, killing the nerve and leading to a dead tooth or severe infection.
• 1 to 2+ years: The decay frequently evolves into a painful dental abscess, causing bone loss in the jaw, tooth fracture, or total tooth loss.

Serious Risks of Waiting

• Abscess formation: A painful pocket of pus can form at the root, leading to severe throbbing pain and facial swelling.
• Bone and adjacent damage: Bacteria can destroy the jawbone supporting the tooth and damage neighboring teeth.
• Systemic infection: In rare and severe cases, untreated dental infections can spread to the bloodstream or other tissues, becoming life-threatening within days or weeks once spread.

Tooth decay pain does not go away permanently on its own, and a sudden stop in pain often means the nerve inside the tooth has died rather than healed.

Why Tooth Decay Pain Linger or Disappear

• Progressive damage: Decay destroys enamel and dentin, eventually reaching the inner pulp where nerves and blood vessels live. This causes sharp or throbbing pain.
• Nerve death: If a severe toothache stops suddenly, the nerve may have died from the deep infection.
• Hidden infection: Even without pain, bacteria continue to spread, which can cause a severe abscess, bone loss, or tooth loss.

When to See a Dentist

You should visit a dentist promptly if you experience:

• Pain lasting longer than two days
• Pain that wakes you up at night or hurts when biting
• Swelling in your face, jaw, or gums
• A fever or a bad taste in your mouth

For professional guidance and symptom evaluation, consult resources like the Cleveland Clinic Toothache Guide or the NHS Toothache Overview.