Removable restorations are often called “overdentures,” because they go over your implants and snap onto them, which holds them tightly in place.
Just like fixed restorations, removable restorations are held in place by a series of 4-6 dental implants. Usually, a bar or another specialized device is attached to these implants. The overdentures snap directly onto this attachment point.

While this type of denture is removable, overdentures are not at all similar to traditional dentures, which fit tightly onto your gums and are held in place with friction and/or dental adhesive.