I had a severe
 
short chin,
 so I went to the dentist for a consultation to
 advance the tip of the chin
 . ㄴㅅ is two-step osteotomy
 2. HSJ is one-step osteotomy + artificial bone graft
 and the price difference is expensive, so they say bone grafting is a difficult operation (260 difference) Will only the
 chin protrude or not look as pretty as expected after a double osteotomy? I'm worried and
 expensive artificial bone transplant, but I'm worried that the result will be so-so, so
 please give me some advice from someone with experience ㅠㅠ
 It really seems to be the biggest worry in my life...