I have something going on under my very back bottom tooth, it has a small crack in it next to the gum, it is a crown and there was a root canal done  previously. I have taken an antibiotic 2 times over past year  but have yet to do anything with the tooth. I have a hoarseness that doctors cant seem to find a reason for. Could this be it? It has a foul smell but sometimes goes away. I wanted to be able to keep the tooth if possible but if it could be the cause of the hoarseness  it should be pulled, correct?
Hi. Thanks for the query. In case if there is crack in the tooth and also if there is bad smell then it is clear indication that there is infection in the tooth.Also, there is a possibility that there is food lodgment between the tooth and the crown leading to bad smell. If the tooth is infected and as it is the last tooth, then there is a possibility that the tooth infection is causing recurring infection in throat causing laryngitis which is the cause for voice hoarseness. But for a confirmation of the cause of voice hoarseness you should consult an ENT Physician or an Emergency room and get a laryngoscopy done. For the tooth you should first get an x-ray done so that the condition of the tooth can be checked. If the tooth is fractured and there is a poor prognosis then you should get the tooth removed. Please send me the latest x-ray of your tooth so that I can let you know what is needed to be done so that you get appropriate treatment done. Hope this helps. Regards.