Dental window surgery is generally not dangerous. 1. Dental window surgery is a small surgery, the current technology is more mature, generally will not be too dangerous, and the surgery is operated under anesthesia, only local anesthesia, not easy to anesthesia, accident and the process will not appear severe pain, recovery after surgery is relatively fast. 2. However, if you are still bleeding for a long time after the surgery, it may be caused by the blood vessels being too big, or it may be caused by your own poor blood clotting function. After dental window surgery, you should pay attention to observe the bleeding situation, if persistent bleeding occurs, you need to go to the hospital in time to cooperate with the doctor for examination and treatment.