A denture, or full denture, is a removable appliance that replaces all you upper teeth and/or your lower teeth once they have been extracted. Dentures are made out of an acrylic base with resin or porcelain teeth. A partial, or partial denture, is a removable appliance that will replace missing teeth and is designed to fit around the existing teeth. Partials can be made from all acrylic, metal and acrylic or a flexible acrylic.