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Infected root canal

User Level:
Patient
Posted by: santolan  (9 years ago)
Dear Doctor,

About two years ago, I had a root canal done in my upper right second molar. I had the temporary crown on for a month and when it's time to get the permanent crown it did not fit properly. I waited for another week to have the permanent crown on. Last week, I experienced a throbbing pain in the treated tooth and I had a fever the next day. The tooth hurts when I apply pressure on it. I went to the dentist today who said there's an infection in the canal. I guess I caught the infection when the fitting of the permanent crown was delayed. He removed the crown and he prescribed antibiotics. He said he may need to do a root canal again on the tooth if necessary. I am thinking of just getting a new crown without having a root canal treatment again. The antibiotic will clear the infection anyway. Please advise me on this.

Any idea would be highly appreciated.
User Level:
Dentist
Your dentist is correct to want to retreat the root canal. Antibiotics will eliminate the infection TEMPORARILY but as soon as you stop taking the antibiotic the infection will return. Root canals don't work about 10% of the time. Retreating them will resolve the majority of those but sometimes root canals don't work at all.

Good luck!
Posted 9 years ago
User Level:
Dentist
You now have another second professional opinion. Don't remake a crown on a symptomatic tooth. Retreatment is a good option but successfull 50% of the time. We try our best the first time with a 90% success rate. 1 in 10 don't make it. Good Luck.
Posted 9 years ago
User Level:
Patient
Posted by: santolan  (9 years ago)
Thank you for the information. I thought once infection is cured, I am already good. I now know the importance of knowing where the infection is stemming from. Thanks again!
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