How long do you keep models sent to lab for crown/bridges?

If a piece of tooth broke in your moutt then it would be wise to call your dentist.  I am not certain why that tooth was not crowned after the root canal, but it should be now before the tooth fractures further.  Good luck.  

A tooth that has had two root canals and still causing you pain is not a good sign.  I would recommend that you schedule an appointment with a dentist soon.  There is a decent chance that this tooth may need to be extracted and have a dental implant placed.  Best of luck.  

If you have lost a post and crown and the remaining tooth has decay it is very likely that this tooth is not restorable and should be extracted.  It is always best to plan for a dental implant for the extracted tooth if possible.  Ask your dentist about this option.  

You could have an irreversible pulpitis which would indicate a root canal is needed.  Have your dentist evaluate again to determine if you need this.1. Is your tooth sensitive to hot liquids?2. Does it linger or go away immediately?3.  Are you consistently taking Advil or Tylenol for the d...