Inside lower lip pain/irritation

Hello, Thank you fro your question. Your situation is actually very common with people who wear complete dentures, especially the lower denture. From what you mentioned in your question, it indicates that there is too much pressure in the frontal area of the lower soft tissue between the inside of your lower lip and the front of the lower ridge where the denture rests in. Many times when the lower impressions are taken, the Labial frenum (the vertical connective tissue in the center) is not extended enough, which is then not relieved enough in the Final lower impression, and then not relieved enough in the completed lower denture. As well, the impression may have been extended too deep, resulting in pressures on and surrounding both sides of the Labial frenum.  These over pressures can possibly cause the symptoms you are describing, and can be easily relieved and adjusted by your Dental practitioner. The Labial notch (the vertical notch in the front of your lower denture) can be opened up more, and the borders or Labial flanges on each side can be recontoured to fit better and not be exerting pressures in this area. I urge you to revisit soon your Dental practitioner who made the dentures to have this adjusted and/or refitted to relieve this continuing discomfort.   If the discomfort does not lessen, the dentures have to be reexamined. There could possibly be not enough "free-way space" between your upper and lower anterior teeth, which can also result in too much pressure exerted in the front areas of your lower ridge in the same areas you are describing. I hope this helps.