Blender is currently not able to create n-gons.  An n-gon is a face with more then 4 vertices, while they can be useful when editing a models topology you never want to leave them as n-gons.  A lot of rendering engines can't use n-gons, DAZ Studio and Poser both have problems with them and almost all game engines need the models to be all triangles.

I don't mean to seem rude, but from reading your other posts I feel you are relying to much on sculpting instead actually modeling.  Sculpting should be used as a way to add that last bit of detail to a model.