Dentures are similar to bridges in that they are realistic replacement teeth used to mask missing teeth. However, unlike bridges and crowns, dentures are removeable. Depending on how many teeth need to be replaced, you may need partial dentures or full dentures. If all the natural teeth have been removed, full dentures are a full set of teeth. If you still have some natural teeth, partial dentures are used to fill in where permanent teeth have been removed. Dentures should be cared for just like natural teeth. They should be brushed every day, and kept moist when not in use. Even with full dentures, you should still make sure you are keeping your gums and tongue clean as well as the dentures.