This is a particularly dangerous myth. Dentures are made to fit precisely and usually do not require use of an adhesive for comfort. In an emergency, denture adhesives can be used to keep the dentures stable until you see the dentist, but prolonged use can mask infections and cause bone loss in the jaw. Likewise, a poorly-fitting denture, which causes constant irritation over a long period, may contribute to the development of sores. If your dentures begin to feel loose, or cause pronounced discomfort, see your dentist immediately.
Drugs can affect denture fit and wearability.
For example, certain medications can reduce the supply of saliva in your mouth, making it difficult to swallow or chew. So let your dentist know of any medications you may be taking regularly - or even occasionally. I have a fixed income. Regular dental care is too expensive. Before deciding that oral examinations and denture care is too costly, discuss the situation with your dentist.