Typically dentures are supported in place by a plastic plate that is inserted into the mouth and removed at night and for cleaning. Sometimes these can move about when you are talking and eating, and some foods may have to be avoided because the denture is not secure enough to cope with heavy chewing. If you have ever experienced this you'll know that it can really impact your quality of life. Dental implants can dramatically help denture stability and implant supported dentures have special attachments that snap onto the implants for snug and secure fit.
Implant supported dentures are often made for the lower jaw because traditional dentures tend to be less stable there. An implant supported denture remains removable and you should take it out daily to clean the denture and gum area as part of your oral health routine and, just as with regular dentures, you should not sleep with your dentures in at night.