My jaw always pops when i chew. what could be the cause of this?

Movable disc: There is a disc in the temporomandibular joint (TMJ) that separates the lower jaw from the socket in the skull. If the disc or its ligaments are injured or stretched, the disc can 'pop' out of position during opening or closing or chewing. This makes a 'clicking' sound when it occurs. This is a temporomandibular joint disorder (tmj). A dentist can evaluate this problem and possibly correct it.

Temporomadibular Joi: It sounds like you are experiencing a temporomadibular joint disorder. This disorder can come and go throughout a lifetime or become constant. Signs of tmd are pain in the jaw, ear aches, headaches, popping and clicking, and can cause your jaw to lock. This condition is usually brought on by stress, however can develop overtime if your dental bite is not properly aligned.

TMJ: Sounds like you may have some displacement of the soft tissue internal jaw joint structures. You should consult with your dentist.