Whether I should go for lower jaw segmented surgery or not?

I am 24 yrs old . I have no major bite problem ..but my upper and lower teeth concide on each other and lower lip is slight outwards ...due to which i have little facial complexion in public. Dr. Suggested me for segmented lower jaw surgery in which he will cut my lower jaw bone nd fix it. I am really scared for its results nd after-effects. And also have fear about the plates infection nd the possiblity of their broken. Plz suggest m asap bcz i have to go for it in the coming month.

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