Long-term bad breath, phlegm throat, frequent sore throat, what to do?

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Hello doctor! My sister has had bad breath for about 5 years now at the position of the teeth between the teeth II-III, sometimes it is swollen and painful to press and when eating food stuck between those teeth, it has a very unpleasant smell. . The pharynx area always feels like there is a lump of sputum and no matter how you spit it up, you often have a sore throat.
So the doctor asked me: "Long-term bad breath, phlegm throat, frequent sore throat, what to do?" Thanks for the advice and answers!
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Hello! According to your description, your sister is suffering from bad breath, interstitial inflammation between teeth number 7 and 8, this is a common disease. To overcome this situation, you should first encourage your brother to use dental floss or water floss to remove food left in between teeth. If flossing or flossing does not improve inflammation, you should see a doctor to consider extracting tooth 8 (Molar III).
The symptoms of phlegm in the throat may be due to tonsillitis or VA... In this case, you can encourage your sister to go to a hospital under Vinmec Health System for an ENT specialist examination. Throat. Here, the doctor will examine to find out the cause and appropriate treatment.
Thank you for trusting and sending the question: "Long-term bad breath, phlegm throat, frequent sore throat, what to do?" to Vinmec. Wish your family a lot of health. Best regards!

Answered by Master, Doctor Dang Tien Dat - Doctor of Odonto-Stomatology - Department of Medical Examination and Internal Medicine - Vinmec Ha Long International Hospital