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Q. I noticed a clear bubble under my tongue. It is not painful. Is this due to an infected tooth?

Answered by
Dr. Nivedita Dalmia
and medically reviewed by iCliniq medical review team.
This is a premium question & answer published on Mar 21, 2015 and last reviewed on: Jul 26, 2019

Hello doctor,

  • I have had swollen glands for a few months now.
  • I have seen an ENT doctor for the same.
  • He ran a blood test and it came back normal.
  • He told me give it a month and they should go down.
  • They have not gone down or grown.
  • Before going to the ENT doctor, I also visited a dentist and got to know that I have a tooth on each side that is infected.
  • He said that the molar has to be taken out.
  • Today, I noticed a clear bubble under my tongue. It is not painful.

Are these related?


Hi ,

Welcome to

  • The swollen gland can be due to the infected molar.
  • An infected tooth also can cause swollen glands in the neck.
  • The swollen glands will subside only if the infection site is cleared.
  • Get it treated as soon as possible.
  • Visit the dentist, get an x-ray (IOPA - Intraoral Periapical Radiograph) done for the infected tooth.
  • Meanwhile do lukewarm saline mouthrinse 3 to 4 times daily.
  • The clear bubble present below the tongue is not linked to the infected tooth.
  • This can be a mucocele or ranula (painless fluid filled swellings in the mouth).

Revert back with the x-ray reports to a dentist online for further follow up -->

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