My friends top 4 false dentures get tight through the day, as though gums are swelling and experiencing pain also swollen cheek?

Dental visit: Get a dental exam and give your full medical history. Dentures can get tight with certain diseases such as paget's disease.

Partial,full, fixed: Do not know exactly what you mean by the top 4? Is it a partial denture? Is it a denture? Is it a bridge? That being said, the symptoms that you are describing is not normal. Your friend needs to go to the dentist and have a full examination with x-rays and if your friend has remaining teeth, a periodontal charting to assess disease. Once the information is gathered a diagnosis will be presented.

Poor fit?: Not sure what "top 4 false dentures" mean, but if it a removable partial denture it either doesn't fit the gum correctly or the bite against the opposing teeth is off or your friend is clenching on it. You friend needs to see a dentist to determine which it is.

See a prosthodontist: Pain and swelling are symptoms that should not be ignored. See your prosthodontist.

Denture- poor fit: Your friend should take her denture out every night to allow gums and bone to "rest". If changes occur after wearing dentures it is most likely the denture needs to be relined or remade.D an average denture should "last" seven years (or less) depending on use. Also dentures should be professionally evaluated at least once a year.

Soft tissue dynamics: Generally soft tissues are dynamic, not static, so they do change some during the day, same sensation your shoes give you at the end of the day and you want to remove them. The best answer for your friend is to have a fixed prosthesis made with dental implants, to avoid any contact with the gum tissue, they look better, last longer and need no adjustments.

Denture Swelling: Swelling, pain and tightness are not normal symptoms. Have your friend calling the dentist for an appointment. If they are new, they might just need to be adjusted to have them fitting better. This will take care of the pressure and some gum swelling. The swollen lips is a different story, depending of the teeth replaced, they might be pinching the lips. A dental visit is the best way to find out.