Many people hope that dentures can be used for a lifetime, which is wrong, both movable dentures and fixed dentures are not used for a lifetime. Long-term use of dentures, the gap between the oral mucosa tissue and dentures will become larger, or there is damage to adjacent teeth, while some materials of the teeth will age and deform, and the tooth surface will flatten and become lower due to wear. It is important to check the oral tissues and dentures in a timely and regular manner (half a year or a year), follow the advice of the physician and replace unsuitable dentures in a timely manner, generally speaking, dentures should be replaced after 5 years of use.