The reason is 3rd molars/wisdom tooth. The particular gum region is coming in between your bite or it has arised due to hitting of upper last molar in the lower gum region. Kindly get it evaluated clinically at the dentist's followed by a check for pocket formation due to lower wisdom tooth as well. And also x rays and bite check. Till then saline lukewarm water gargles or ointment for this gum region will be helpful.

The last wisdom tooth is decayed, partially erupted with infection of the overlying gum. Treatment is removal of the wisdom tooth after radiographic examination. Please visit dentist for the same.

Hello This is called pericoronitis Please visit the dentist for the treatment Advised lukewarm water rinse with some salt

Hi This is may bey gum infection please use proper ointment apply on where uh feel more irritated.

Hello, The gums near the wisdom tooth seem to be inflamed and the reason for pain. Inflammation could be due to multiple reasons including wisdom tooth eruption, food lodgement, decay, upper wisdom teeth grazing the lower gums.

Apply hexigel over there, there is swelling of gum, avoid hot food, gargle twice a day and get its cavities filled

This is wisdom teeth & it's surrounding tissue.. there is food lodgement... So swelling & redness..

The picture you show is the wisdom tooth which is causing you a pain and its decayed and its infected, thats the reason you are countering pain right now.

Hello There is swelling in the gums surrounding the wisdom tooth Also can see cavity with tooth You will have to get an xray done

It is a probably gum infection and related cheek bite, advice to show a dentist and get scaling, also use gum ointments

Gum infection due to food accumulation. The dentist will clean the area . Rinse it with antibiotic and some general precaution needs to be followed after that .

On looking at the picture, it appears like your Gums in that region are inflamed. Either you are biting on the gums Or Deep cleaning is required to remove the inflammation causing agents. Or There are clinically visible caries that need a radiographic examination from which we can arrive at the final diagnosis.