Normally speaking, after the zygomatic fracture is injured, it needs to be surgically reduced at the time, and then it can be healed naturally. It is not a big problem. Because you were injured 4 years ago, the bone must have healed. If there are no obvious facial deformities, malocclusion, limited mouth opening, etc., it is recommended that you do not undergo treatment! Because it takes too long, it increases the difficulty of the operation and the pain. If you are really worried, I suggest you go to the hospital to take a curved tomographic and lateral radiograph to understand the current condition of the fractured site.

About the surgery, just make a small opening to reset the bone. In a regular hospital, it is a very small extraoral surgery. There is nothing to worry about unless you find a 250-dollar doctor... Finally, I hope that the poster can get rid of the injury as soon as possible. Pain shadow.