There are two types of dentures. Complete dentures that are used to replace all the upper and/or lower teeth where there are no teeth remaining. And a partial denture, which is a removable dental appliance that replaces multiple missing teeth. Partial dentures can be attached to the existing teeth with clasps, or with crowns and bridges. A removable, partial denture will occupy the space left by missing teeth and give you a full, natural-looking smile. Both types of dentures will make it easier for you to chew and will prevent your face from appearing saggy and drawn in by supporting your lips and cheeks.