Denture adhesives are used to help retain dentures in the mouth. Before denture adhesives are used, a dentist should be consulted. Ill fitting dentures can cause areas of chronic irritation which can lead to mouth sores and ulcers and eventually could be a source of malignant transformation. Mouth cancer is not something to be taken lightly, so a dental examination is always best to have before considering denture adhesives. Most ill-fitting dentures can be relined with new plastic to have them conform to the gums better. When teeth are removed, the body realizes that there is no need for the bone to hold the teeth in, so it slowly allows the bone to dissolve. Since the denture plastic doesn’t change, gaps begin to form which causes a loss of suction. A reline will fill in the gaps, restoring the suction. There are other times, especially on the lower, where there is not enough bone for adequate retention and stability. In this case, it is best to train the muscles to keep the denture in place while chewing and talking. This will allow the denture to stay in place during function.