Yes, the gentle jaw is very effective for people who have had recent surgery including brain surgery, oral surgery, radiation, etc. since it helps to regain the lost range of motion that is usually decreased during these procedures. The temporalis muscle is the muscle in the skull that is usually cut during brain surgery. It is one of the four muscles the gentle jaw stretches along with the superficial masseter, the deep masseter, and the medial pterygoid. These are the four muscles that close the jaw, which tighten up after surgery and/or radiation in the head. We recommend you go slow and do not push yourself too fast but you are in control of the amount you stretch.