<s>[INST] I had a TMJ dislocation recently, 2 weeks prior to that I had a root canal procedure which caused me to have limited mouth opening. I am wondering if I should see an endodontist to evaluate me or a TMJ doctor first? By the way my TMJ got dislocated again at the ER after opening my mouth again more than 2 finger breaths. [/INST] Thanks for your query, I have gone through your query. The TMJ dislocation is because of chronic strain or load on your jaw joint that occurs if you have grinding your teeth while sleeping and any history of trauma to the joint or stress. Keeping your mouth open for longer period of time may also cause dislocation. Consult an oral physician or maxillofacial surgeon and get the joint reduced and apply bandage around the head stabilizing the joint. Donot open your mouth too wide, take soft diet. If the dislocation result repeatedly then surgical management can be done. I hope my answer will help you take care. </s>