Can I see a frontal effect during square jaw surgery? I'm looking for a hospital like that! First of all, looking at the reviews, I personally think ㅂㄷ ㄷㅇㅇ ㅇㅊ ㅇㅍㅅㅌ? Four places are visible like this, but if you look at the frontal effect, is it a cortical osteotomy? Is it necessary to do that as well? Are there any people who have had surgery?