Hie.. At very first.. which TMJD u Have been diagnosed with? Whether it’s muscle related or joint related.. any disorder like tmjd will lead to headache /lock jaw/ improper mouth closing / imbalanced occlusion., secondly, the imbalance which you are facing is related to ENT /vertigo/ cervical ..

Although the two are very closely related in terms of anatomy they are actually different issues. Imbalance is arising from issues in your middle ear, vertigo developing from cochlear fluid moving imperfectly in the semi circular canals of your ear whereas the tmj joint is outside and below the external auditory meatus. If you feel an exaggerated click on opening it is related to your tmjd nothing else.

Imbalance while walking is mainly due to the vestibulocochlear nerve which helps in hearing and maintaining body balance. It has a negligible effect from a TMJ aspect. Consult an Otolaryngologist for your sense of Imbalance

These are two separate issues and need to be handled differently. TMJD is due to dysfunction of jaw joint and muscles and cases symptoms like pain and difficulty in chewing, etc. Imbalance cannot be generated by the TM joint and has different causes.