Will jaw surgery affect my singing voice? TERRIFIED and trying to decide what to do? (Photo)

I have been singing all my life and it is my life goal. 10 years ago, I was told that the orthodontist that did my braces did not do it correctly and did not align my jaw. He recommended surgery and braces to fix it. The only reason I haven't done it is because I am terrified it is going to change my singing. I am also very self conscious about my profile and my smile. I feel like my teeth and too big and they don't show enough teeth to get that "hollywood smile".