Hey guys, I have two cavities in my two bottom left-side molars untreated and recently I had some pain there, nothing severe but felt like deep inside the tooth and at the same time i developed a tmj pain on my left side, after a day or so both pains subsided but am dreadfully afraid this could mean my root canal is infected and the infection temprarily attakced my joint, those teeth should have been treated long time ago (all comes down to money of course).so is this an indicator of a root canal problem? thanks for any input....