Hi
Of course a full examination will allow you to answer these questions. If you feel uncertain about the treatment option you have received, then you have the option of getting a second opinion.
If you look at my blog, you will see an example of a case which we closed a large gap without creating spaces anywhere else.
http://www.dental-suite.co.uk/blog/
Unfortunately i can not say if spaces will be created in your case, if you close the gap, without looking at the mouth.