Self-managed home care, physical therapy for the jaw and the use of a mouth … Either of the two bones in…. The lower part of your face that moves when you open your mouth: Common causes of jaw pain include injuries to your jaw or mouth, dental problems like gum disease, infections … Jaw pain may be mild or can be severe and affect your quality of life. The most common reasons why your jaw might be in pain. Jaw, either of a pair of bones that form the framework of the mouth of vertebrate animals, usually containing teeth and including a movable lower jaw (mandible) and fixed upper jaw (maxilla). Understanding jaw (orthognathic) anatomy and problems a jaw that’s too small, too large, or crooked can cause problems with chewing, speaking, breathing, and even sleeping. Learn about the possible causes of jaw pain as well as 10 ways to find relief. · jaw pain can affect your ability to eat, speak, and sleep. · jaw pain is a common issue that affects millions of people in the u. s. · most of the time, the pain and discomfort related to tmj disorders lasts for only a limited time.