What is this bump which I have on the place where the wisdom tooth was?

Hi,

Welcome to icliniq.com.

It seems that your upper wisdom tooth (if it is present or the last molar) has grown more downwards making direct contact with the gums leading to ulceration and soreness (attachment removed to protect patient identity). As you removed lower wisdom tooth years ago, the upper tooth has kept growing without hindrance and is now hitting lower gums while chewing. The only permanent solution is to remove upper too or you can get the another molar, which is hitting at the spot, grinded and smoothened for temporary relief.

Hi,

Welcome to icliniq.com.

I understood that you are referring to the area behind your molar and can see the ulceration. As there is no upper wisdom tooth, then there are three possible reasons for it. Sometimes, the upper posterior cusp of the last molar might be touching the spot, which can be seen correctly by clenching the teeth and then looking from the side. If some root portion of the lower wisdom tooth might have fractured while extraction and has remained inside, which may have now surfaced after a long time. It seems now to be a more probable cause. It can be just an ulcer, which formed due to injury while chewing food. You might need an x-ray to confirm or just need to check the site with a sterile probe by your dentist. You can use an anesthetic gel to apply over the area to get relief.