Photoshop Request 5.19.17

Good afternoon!

Was jus curios if you can switch the girl on the right smiling with teeth, with the same girl smiling with out her teeth in the other photo.

It's taken in a dim light setting so I understand if it's too hard to do.
Much appreciated if anyone could try.




Hmmm it looks a little off, could you use the girl on the left from the first picture, and put the girl on the right in the second picture together?