Iv'e had tmj for a few years, have a night guard which has worked fine, I had bone spur surgery on my right shoulder on november 5th, 2009, started having problems with my front tooth it felt like I had a cavity between my two teeth, went to dentist he took xrays said I had abcessed tooth, he said I needed root canal so I did, he opened it up the tooth was empty no infection, so I didnt need antibiotics. went back 2 weeks later to finish root canal.