Post and Core Crown and tongue thrusting...Am I in danger of fracturing root?

It is possible that you could loose your post and core and crown, but generally, they are very strong and durable.  I would not waste time worrying about this eventually breaking, because it may very well never break.  Some dentists may recommend a night guard, but I have not found them useful to preserve post core crowns.  Whether the post and core fails in 2 months or lasts forever, at this point, you cannot really do much about it, until after it fails.  This means, getting an implant (expensive) or a bridge (less expensive) to cosmetically replace the potentially missing tooth.Good luck and I hope this helps. Follow me if you have more questions.Sarah Thompson, DMD

Although your tongue habit may continue to push your tooth outward, the forces on your teeth by your tongue are less likely to fracture your teeth than biting into hard food, or in people without "tongue trust behaviors" who grind or clench their teeth frequently and very hard.  Tongue trust therapy is not very successful, thus it is doubtful that this habit of yours will ever discontinue even if your saw a speech therapist to address it.My advice is not to dwell or worry about it.  Give things time to settle down.If you did loose your teeth due to fracture you should consider a dental implant.  The great thing about dental implants with crowns is that they won't move with your tongue thrust habit, as they are solidly joined to bone.