Hello, there will be no danger. Because there is facial artery near the mandible, when the plastic surgeon performs mandibular angle surgery from the oral cavity, the movement is slightly deviated, and the cutter head may rub against the artery, causing bleeding of the patient, causing problems similar to Wang Bei's cosmetic surgery. In order to avoid this phenomenon, South Korea now uses special arterial protection equipment when performing mandibular angle surgery, and the scalpel will not touch the potentially fatal artery. With the above protection, it is very safe! If you still do not understand, please contact Belai.