<오리>

<Duck>I have a severe protruding mouth.
 I wonder if the upper gum bone is protruding. When I close my mouth, the gap between my lower teeth and my upper front teeth is about 1 cm.
 When I smile, only my upper teeth are visible (when I close my mouth, my lower teeth are almost invisible because they are covered by my upper teeth)
 
Whenever I eat something now. I hear a sound in the left side of my jaw.
 
Surgery history - nose surgery (nasal septum), implants in the chin,
 
there seems to be no solution to calbone correction...
 I'm considering orthognathic surgery, but I'd like to know the cost, duration, and how it's done.