Dentures are made to fit using two methods denture fitting, immediate and conventional. Conventional dentures are fitted once teeth have been removed from the mouth and the gums have recovered fully. Then, once fully healed after the teeth have been removed, impressions of the mouth are made and are used to customize the dentures for best fit. The dentures are then created, fitted and adjusted, until they are an ideal fit to the mold. Conversely, with immediate dentures, molds of the jaw are made beforehand and dentures are fitted on the same day that the teeth are removed from the mouth. With this procedure, the denture will later need to be adjusted for a perfect fit. In addition, later you might even need to get a replacement denture as your jaw alters shape in the aftermath of your teeth having been removed.

Once you have had your dentures fitted into your mouth you can fix periodic gaps between the dentures and your gums with adhesives. There are a lot of adhesives on store shelve made specifically for dentures which help enhance the retentive crossing boundary between the plane of a denture and the underlying tissues upon which the false teeth rest. There is a small gap in the boundary between the inside of a denture and the jaw which is normally filled with your own natural saliva, but this gap can increases in size, leading to dentures that can become unstable. As this gap increases, a denture becomes less retentive and lose its biting strength.

The space between dentures and underlying tissues is caused because of fabrication and material limitations used to make dentures. This limitation creates space and gaps and along with the constant changes in contour and shrinkage of the jawbones, can cause irritating and inconvenient slippage of dentures. Although, this interface space will exist in all dentures and even increases over time, maintaining the best possible denture retention and function depends on reducing these gaps and spaces. Quality denture adhesives fill these increasing spaces giving you improved suction and creating a close contact between a denture and the underlying surface. Most importantly, correct use of denture adhesives helps keep food and other foreign materials from gathering under the denture base and possibly leading to infections.