The problem that arises because the complex structure of joint muscle, fiber, disc and bones in our jaw does not work properly is called jaw joint disorder. TMD (Temporomandibular Joint Disorder) is when the ligament connecting the lower and upper jaws does not work properly.
It is believed that some of the jaw joint disorders are related to many factors that are not fully understood. Below are some factors that can cause jaw joint disorders:
Psychological stress
Bruxism, known as the habit of clenching and grinding the teeth
Joint degeneration caused by diseases (such as joint inflammation, calcification)
Trauma from severe concussion of the head as a result of a traffic accident
The way the teeth come together during chewing (occlusion) or the abnormal jaw structure (malocclusion) may also be the cause