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Hot/Cold Sensitivity After Crown & Onlay Bite Sensitivity

Five months ago I had two crowns done on the upper right side of my mouth.  I had a root canal performed on one, but not on the other.  The root canal I had done went horribly - the bleach went into my tissues and I had terrible swelling, my face turned purple/black and I lost feeling in part of my lip and part of my cheek.  I have since healed from the root canal.  However, within the last two months I have hot/cold sensitivity on the one I didn't have a root canal performed on.  I had no problems before having any of this work done. I also have sinus pain now. I initially thought the pain was gum related, but the dentist indicated that was not the case.  Should I have a root canal on the other tooth? Will the pain go away? Why do I have the pain?

I also had an onlay done on the lower left side and now have sensitivity when I bite on anything somewhat hard (ie a Cheerio, chip, etc.) I didn't have sensitivity initially.  Should I have the onlay replaced? Will the sensitivity go away?
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Avatar universal
MEDICAL PROFESSIONAL
You have legitimate questions but I no not have enough information to give you an opinion.I might consider getting a consult from another dentist.
Helpful - 0
Avatar universal
1. I'D SEE AN ENDODONTIST ABOUT THE SENSITIVE UPPER TOOTH AND THE ONLAY.
2. IF THESE ARE ALL CERAMIC RESTORATIONS (I PERSONALLY HATE CERAMIC ONLAYS FOR MANY REASONS)
    KEEP IN MIND THAT THE WAY THEY ARE BONDED TO TEETH SOMETIMES CAUSE SENSITIVITY PROBLEMS.
    
FIVE MONTHS IS TOO LONG TO WAIT AROUND FOR THINGS TO IMPROVE.
Helpful - 0

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