TMJ stands for the TemporoMandibular Joint. The temporomandibular joint is located in front of each ear and is part of the lower jaw. This is the joint that is responsible for jaw movement. The TMJs are part of a three part system that include the teeth and jaw opening and closing muscles. When these three parts are working in harmony, you are comfortable. When there is disharmony between the three parts, there can be many symptoms some of which can disrupt your daily life. Examples include migraine headaches, facial pain, worn loose teeth, clicking and popping of one or both joints and an uncomfortable bite.
Parafunctional habits include grinding and clenching can make the symptoms more severe.