Basically, 1-3 months. Bone grinding and plastic surgery is special, so you should pay special attention at this time. Although bone grinding is the most direct and effective method to change face shape at present, it is not immediate after operation. Because there is a swelling period of the wound after zygomatic plastic surgery, the change of facial width is not obvious from the appearance, and some will even be wider. This period usually lasts for half a month to about a month.