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Question
Hi there, I had asked u a few ques's re/root canal I recently
had done 3 wks ago. Still had pain, and the endodontic put me on
steriod med for 5 days, thinking the pain was due to muscle
inflammed. Didnt help or work, still have pain. Im pretty sure
u are right about the pain being caused by another tooth in area.

I have an app't for another root canal on a tooth that had
root canal done 10 yrs ago, I was told that 2 of my past root
canals are abcsess due to not going all the way down to the root.

Im reluctant to have this done again. My questions;
How is it a root canal tooth needs to be done again?
If its infected, why not give me antibiotic for it?
Why is it that my former dentist didnt see all the problems
on set of xrays, & yet another dentist did??

I never had a root canal that had already been done, so
confused how thats done with the crown done already on it.
More complicated or less??

I still havent had perm/fill/crown on tooth I just had done,
b/c of the pain, & worried the temp will fall out.

You have been very helpful with my past ques's recently, and
very knowledgable. Look fw to hearing from you.
Thanks, Maureen

Answer
Hi again Maureen,

I'm sorry to hear the steroids didn't work. At this point, I really can't help with a diagnosis since I can't examine you, see your x-rays or have a complete history of what and why your root canals have been done. However, I can address some of your concerns.

How is it a root canal tooth needs to be done again?

About 3-5% of all root canals fail. Usually it is because there were problems doing the original root canal like extra roots, calcified canals, poor technique by the dentist or problems with your body being able to heal the abscess.

If its infected, why not give me antibiotic for it?

Antibiotics can treat an active infection temporarily, but unless the source of the problem is fixed, the abscess will come back.

Why is it that my former dentist didnt see all the problems
on set of xrays, & yet another dentist did??

I have no way of answering this. Two different dentists seeing the problem 2 different ways.

I never had a root canal that had already been done, so
confused how thats done with the crown done already on it.
More complicated or less??

Re-doing a root canal through a crown is usually not a big deal. We just drill a hole through the crown, get access to the inside of the tooth, remove all the old root canal filling material, make sure the roots are completely cleaned out, refill the roots and put a permanent filling back in the top of the crown. Esthetically, it may look a little different, but it saves having to redo the crown.

I still havent had perm/fill/crown on tooth I just had done,
b/c of the pain, & worried the temp will fall out.

When you go back to see your dentist, have him/her check the temporary. A temporary is just that...temporary....so it IS possible it could come out. You don't want that to happen because the root canal cement is soluble in saliva, so if the temporary were to come out and left out for any period of time, it could cause the root canal to fail.

I hope this helps explain things for you. Good luck!

Gary Backlund DMD, MSD

Dentistry

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Gary Backlund, DMD, MSD

Expertise

I am an Endodontist ( root canal specialist ) and can answer questions about root canals and their treatment. I cannot diagnose or treat online, but can answer general questions. I have been a specialist for 25 years and am Past President of the Washington State Association of Endodontists.

Experience

25 years practicing as a specialist

Organizations
American Association of Endodonists, Past President Washington State Association of Endodontists.

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