Generally speaking partial dentures tend to be held in place by the presence of the remaining natural teeth and complete dentures tend to rely on muscular co-ordination and limited suction to stay in place. The maxilla very commonly has more favorable denture bearing anatomy as the ridge tends to be well formed and there is a larger area on the palate for suction to retain the denture. Conversely, the mandible tends to make lower dentures much less retentive due to the displacing presence of the tongue and the higher rate of resorption, frequently leading to significantly resorbed lower ridges. Disto-lingual regions tend to offer retention even in highly resorbed mandibles, and extension of the flange into these regions tends to produce a more retentive lower denture. An implant supported lower denture is another option for improving retention.
Throughout your lifetime, dentures will need to be replaced and adjusted which can become time consuming and expensive. It is a simple fact that dentures start to become loose and can break through normal activities such as talking, eating, etc. If a denture arch breaks, it may be possible to repair but in some cases it will need to be replaced entirely.
After implant-supported dentures are in place, patients should properly care for their teeth and gums. The dentures, gums, and tongue should be brushed twice a day. Patients should also floss daily to remove debris between the teeth; though false teeth won't become damaged by decay, plaque build-up can still cause gum disease and bad breath. Patients with dentures should also schedule dental visits every six months so their dentists can check the fit of the dentures and look for signs of dental problems.
Teeth can fall out for a number of reasons, ranging from genetics to drug abuse. Most commonly, teeth are removed or fall out on their own due to severe tooth decay. Neglect to upkeep oral hygiene or not seeking proper treatment for damaged teeth, can lead to the onset of decay which in turn leads to loss of teeth. Visiting you dentist in 6 month intervals is a good preventive measure to spot any early signs of decay.