I have a bad smell on tooth #7 in back. My tongue automatically goes there to want to suck it out.  I had a root canal in January.  My dentist took anither X-ray and says there is a small area that my stil be infected because it shows up dark area.  There oral surgeon who did the root canal says it will heal in tme.  my gums are not swollen.  But when I push down my that tooth iit seems like it leaks.  I have a bridge from #6 through 11.
Hi. Thanks for the query. Your symptoms are clear indication that the Infection from. The tooth is not completely healed that is causing bad smell and leakage. So it is advisable to take a course of antibiotics like Augmenting to reduce the residual Infection. But in case if the Infection does not get resolved then it is better to get the tooth retreated with Root canal treatment as the Infection can continue to progress, and it can lead to exaggeration of symptoms like pain, swelling and pus discharge. Hope this helps. Regards.