Dentures are prosthetic devices that are moulded to the oral cavity to provide coverage for missing teeth. Dentures can either come as a full or partial denture where they are supported through the surrounding soft tissues within the mouth. They are not a permanent solution to a missing tooth and may be unstable affecting function and comfort as they are made from plastic. However, they are easy and quick to install and are cheaper than most permanent options. These options include implant and bridge solutions. See bridges and implants. Not only are dentures aesthetically appealing, but they provide increased functional aspects for the patient. These include improved chewing ability, clearer pronunciation, and a natural appearance to the face for those with collapsed areas resulted from missing teeth.