Temporomandibular disorder refers to a group of disorder that normally affects the stomatognathic system. To understand the nature of the disorder one must understand the anatomy and physiology of the concerned anatomical region first An in depth knowledge of the biomechanics of the system can help one understand the nature of the disorder encompassing the entire system.A decision to treat and how to treat should be based on a detailed clinical history,a careful clinical examination, and centred on conservative, reversible therapies. No treatment can be initiated without a working diagnosis. The treatment should be directed at the factors apparently causing the symptoms and/or dysfunction. It is important to rule out other causes of facial pain before investigating the teeth as the primary etiologic agent. Diagnosis is therefore the key to successful treatment; cure when possible and manage when not.