The temporomandibular joint (TMJ) is the hinge that connects the jawbones to the temporal bones of your skull. Found on both sides of the head, it consists of a ball and socket joint mechanism and is separated by a disc to cushion the movement. This joint facilitates common movements such as eating, speaking, and yawning. Any problems with the temporomandibular joint can readily cause TMD or temporomandibular joint disorder.
Temporomandibular dysfunction can include a wide set of disorders such as problems with the muscles that affect jaw movement, pain in the face around the TMJ, and problems within the joint itself. Thus, the diagnosis of a particular TMJ problem can be quite challenging to make. It has been reported that almost 33% of the population is affected by TMD at least once in their lifetimes.
What causes TMD?
Various researches have explored the factors that may potentially be responsible for the occurrence of TMD. Dentists strongly believe that the problem heavily arises from within the jaw or joint itself. Some of the common causes of TMD are:
Injury to the jaw, joint, or muscles of the head such as a heavy blow or whiplash
Grinding or clenching your teeth (bruxism)
Dislocation of the disc between the ball and socket of the joint
Stress or anxiety can cause the facial muscles to tighten and jaw to clench
Osteoarthritis or rheumatoid arthritis of the TMJ
Symptoms of TMD
TMD is a painful condition with numerous accompanying side-effects. Since the symptoms are vague, like headaches, they may often be overlooked and not linked to the joint problem. Some common symptoms of TMD are:
Pain or tenderness in the face, jaw joint area, neck, and shoulders
Pain in the face when you talk, chew, or open your mouth wide
Limited ability to open the mouth
Jaws that get “stuck” in a condition called lockjaw
Clicking, popping, or grating sounds in the jaw joint when opening or closing the mouth.
Difficulty chewing or uncomfortable bite
Swelling on the side of the face
Headaches with a pattern similar to migraines
Earaches and ringing of the ears (tinnitus)
Toothache
Lightheadedness
Treatment options for TMD