A recent systematic review conducted by the Cochrane Collaboration finds insufficient evidence to support or refute the removal of asymptomatic impacted wisdom teeth. An impacted wisdom tooth is called trouble-free, (disease free or asymptomatic) if the patient does not experience signs or symptoms of pain or discomfort associated with it.
Over the years we've heard from many TMJ patients who report that their Temporomandibular Disorder (TMD) symptoms began shortly after wisdom teeth removal or they had their wisdom teeth removed as a form of treatment for TMD. (We also heard that TMD had begun after other types of dental treatment).
It’s important to note wisdom teeth do NOT cause TMD. These teeth only need to be removed when local events justify their extraction. This includes inflammation of the gums around the wisdom teeth, or their negative impact on the neighboring teeth. Wisdom teeth should NOT be extracted for a TMD problem.
Resource: Cochrane Collaboration article , Surgical removal vs. retnetion for the managment of asymptomatic impacted wisdom teeth