Dr. Rich fits many patients for dentures and helps them care for them. Approximately 40% of older Americans wear full or partial dentures. Many have adapted quite nicely. However, many denture wearers have encountered problems, both emotionally and physically. Some people have trouble eating and some may have repeated sores, which can be quite painful. Ill-fitting dentures can lead to yeast infections of the mouth (oral candidiasis), increased or uneven bone loss and even cancer believed to be from chronic irritation.