Flexible Upper Partial Denture
These dentures are made of a flexible nylon that can be made very thin. 
It is preferable for only a few teeth and  is extremely light and comfortable.
It may be used where people have reactions to plasic based dentures.
There are no set codes for flexible dentures, generally the code for a standard acrylic denture is used.

Flexible Upper Partial Denture -
This denture does not cross the roof of the mouth - and is often called a unilateral denture.
It is preferable for only one or two teeth and there is no metal show of wires.
It can be used where people have reactions to plasic based dentures.
There are no set codes for flexible dentures, generally the code for a standard acrylic denture is used.