Dentures are full replacements to all teeth. They use suction to retain themselves and are of great cosmetic value.
Mini implants can be used to improve retention of weak bone base dentures.
Partial dentures are partial replacement of teeth, they use existing teeth to anchor to and are made of a cast metal coping covered by acrylic and teeth.
Flexible partials are the cosmetic answer to the metal based partial, there is no metal in them and they flex a little to allow retention and fit. Both kinds of partial dentures are very retentive and secure.