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Published on Sep 19, 2011
Both upper and lower dentures are held in your mouth by a tight fit of the plastic denture base to the gums. That tight fit is achieved by a combination of muscle control and suction. Mastering the function of the lower denture is more difficult than learning to use an upper complete denture. By comparison, the lower denture has less solid gum tissue to rest on than the upper denture. The lower denture stays in place largely due to the ability of the denture wearer to control their tongue well enough to hold the denture down while they speak and chew. The lower denture doesn't have the suction that the upper denture has to help keep it in place.