Full Dentures are prosthetic appliances constructed to replace all missing teeth, missing bone and tissue. Full dentures also restore your natural facial contour. The dentures are supported by surrounding soft and hard tissues of the oral cavity. A full denture replaces all the teeth on either the upper and/or lower jaw. The life of a full denture, depending on its functional situation, is 8 – 10 years. They will need relining approximately every 3 – 4 years.