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5 Warning Signs You Might Need a Root Canal

Dr. Oliver Wright

Dr. Oliver Wright

Endodontist

|14 September 2025📖 5 min read
5 Warning Signs You Might Need a Root Canal

Don't ignore these symptoms. Catching an infected tooth early can save you from more complex treatment — and a lot of pain.

Root canal treatment often gets a bad reputation, but the real enemy is the infection — not the treatment. Here's what to look out for.

Sign 1: Persistent, Severe Toothache

Pain that lingers, worsens at night, or radiates to your jaw is a red flag for nerve involvement.

Sign 2: Prolonged Sensitivity

If sensitivity to hot or cold lingers for more than a few seconds after the stimulus is removed, see a dentist promptly.

Sign 3: Swollen or Tender Gums

A small pimple-like bump near the tooth, or noticeable swelling, can indicate an abscess forming.

Sign 4: Tooth Discoloration

A tooth that has turned gray or dark may have a dead nerve inside — a sign infection has taken hold.

Sign 5: Loose Tooth

Infection can soften the bone supporting the tooth, causing it to feel loose even without trauma.

Dr. Oliver Wright

Written By

Dr. Oliver Wright

Endodontist · BDS, MDS (Endodontics)

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