Dentures are removable appliances for your mouth. They replace both missing teeth as well as parts of the gum tissue. The material they are made of is a pink gum colored acrylic base which supports the denture teeth. Some dentures include a lightweight metal framework that provides extra strength and support. There are two types of dentures: complete or partial. The former one is applied when the patient has no natural teeth remaining and the latter is applied when there are some natural teeth remaining.