Lump in gum 3 years after teeth extraction. very painful. can't wear lower dentures. could it be fractured or possibly a piece of tooth left?

See a dentist: It could be a verity of different reasons , could be related to extraction some time ago or could be completely unrelated to that. Have a dentist check the area as soon as possible.

Possibly - see DMD: Could be a piece of remaining root (if still present) or a sliver of bone working its way out of the gum or could be a pressure sore from your denture. Either way you need to see a dentist to evaluate the problem and treat if necessary.

Maybe: Typically these things work their way out much like a splinter. However, some do not. See your oral surgeon to evaluate this and explain your options. 3 years is too long to ignore this.

Possibly: The lump could be a residual piece of tooth, or more likely the lump could be bone that did not remodel after the teeth were removed. When teeth are removed in anticipation of a denture, we try to remove any abnormal projections of bone that could interfere with the denture or cause irritation. Unfortunately, even when bone is removed, some irregular bone contours can occur with healing.

Needs exam and X-ray: Any lump needs an evaluation, and an x-ray will show if a root piece is present. Have it checked out by a dentist soon.

Gum Lump painful: Unlikely a fractured jaw or remaining piece of tooth.Lumps in gums may have been there prior to the loss of your teeth. These boney prominences grow from natural teeth clenching. With denture wear over these remaining lumps abrasion and sores develop. A thorough evaluation is in order of your dentures and these lumps. Then appropriate treatment can performed.

See dentist: Three years...A very long time. Curious when the lump showed up. I would see a dentist asap...Could be a root tip, infection, cyst.