Will my gums grow back over the area that was removed when my dentist was shaving my tooth for temporary veneers? (photos)

I have temporary vaneers on right now. My gum looks crooked on the tooth in question because my dentist is putting a vaneer on this tooth to fix it. I can see that the gum line has been moved back when she put on the temporary. Will I need new impressions to make sure the vaneers fits properly or will my margin be showing because they are to short? Also can my gum grow back in this area above the vaneer since the bone is still present. I do not have gum disease and no issues with my teeth.