Will my Original Smile Return After Nose, Chin and Neck Surgery?

It's 2 weeks after surgery when I had my neck lifted, chin augmented and nose remodelled. The results are pleasing. I feel balance has been restored to my face. Aware it is difficult to make a full assessment until all the swelling goes down, I have noticed that my smile is completely different and unattractive. I have a mouth like a letter box. Is this because of lack of sensation in my nose, lower chin and neck causing muscle restrictions? Will my normal smile return?