Cosmetic dentures, as you can imagine, are made to look as natural as possible. Unlike standard dentures that use a heat curing process with acrylic teeth, cosmetic dentures are made from a special acrylic base with teeth that are much stronger and more natural looking, similar to porcelain teeth.
Also some cosmetic dentures achieve a natural appearance through the use of implants. Implants are installed in the mouth so that the dentures have something to hold onto. The cosmetic denture will either rest on or snap onto the implant. What this does is allow the denture to stay in place without the chance of it moving around, which makes the denture more comfortable than a standard one and feels like you have your own teeth.
For further information about these procedures please ask your dentist.