U.S. doctors online nowAsk doctors free
Niota, TN
A 49-year-old female asked:

i had a root canal 2days ago. still lot pain.my concerne is that i feel exectly the same way - cold... hot... when touchs my tooth hurts really bad.?

4 doctor answers9 doctors weighed in
Dentistry 38 years experience
Infection in bone: Root canal procedure clears/ cleans the tooth part of the infection, but there might be some peri apical infection in the bone which can take a few days to clear. Antibiotics and pain meds will help. Sensitivity to hot or cold might be with one or more adjoining teeth which might have some issues. Please have all your remaining teeth checked.
Dr. Andrew Vendelis
Dentistry 54 years experience
Another tooth: It is not unusual for a tooth to be sensitive after a root canal. Adjusting the bite should reduce the pain to touch. But hot and cold pain is probably coming from another tooth.
Dr. Gary Sandler
Dentistry 54 years experience
Was RCT completed?: If the tooth had the rct completed, the nerve, blood supply & all tissue is removed from the canal(s) and therefore it is impossible to feel sensation to hot & cold from that tooth, although it is not uncommon to feel soreness to touch for 1-3 days. If the rct was only started & not completed yet, you could still feel sensitivity to pressure, cold &d hot. Discuss your symptoms with your dentist.
Dr. Don Millner
Cosmetic Dentistry 43 years experience
Multiple causes?: It is possible that (1) the root canal treatment is not fully completed. (2) it is "completed" but a canal was "missed" and a nerve is still signaling hot / cold sensitivities. (3) you had two teeth in need of therapy and only one was treated . (4) the wrong tooth was treated. If your dentist (specialist or g.P. Is unable to determine the cause, get a second opinion from an endodontist.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Talk to a doctor
$30 per visit with

Similar questions

A 37-year-old member asked:

How common is it to have sinus pressure after wisdom teeth extraction?

2 doctor answers7 doctors weighed in
Dr. Jeffrey Jarvis
Dentistry 37 years experience
Possible: It is possible to feel sinus pressure after having an upper wisdom tooth removed, but it doesn't usually feel that way. Contact your oral surgeon or dentist to make sure that you don't have an infection, or a sinus communication. Follow up today.
Putnam Valley, NY
A 43-year-old female asked:

I need a knee replacement so my otto gave me painkillers till I go but lately I had a lot of pain so it says take 1to 2 every 4 hrs for pa?

2 doctor answers6 doctors weighed in
Dr. Nolan Segal
A Verified Doctoranswered
A US doctor answeredLearn more
Ice: Try to limit the pain killers. Usually an absolute max is 8/day. It depends on the drug and the strength. Cold packs for 15-20 minutes at a time can help. There are many different meds to try if the 1 you are using is not effective.
Bicknell, IN
A 23-year-old female asked:

Since I was 5 I have had hearing problems. Now i'm 23 can't hardly hear feels like blockage. Ears hurt, and can't sit through fireworks. Please help!?

2 doctor answers3 doctors weighed in
Dr. Robert Kwok
Pediatrics 33 years experience
Need full evaluation: A person with hearing problems since age 5 years will have had evaluations by her pediatrician or primary care doctor, been referred to an audiologist for complete testing, and been seen by an ENT doctor to find out if there is any correctable disorder causing the hearing problems. If these things have not been done, she should write down her story and take it to her primary care doctor to start.
A member asked:

I have a bad knee I could not walk two weeks ago without a lot of pain my doctor sent me for a X-ray it didn't show anything?

1 doctor answer1 doctor weighed in
Dr. Ish Rawal
Internal Medicine 19 years experience
Cartilage: Xray doesn't show cartilage damage. If knee pain is persistent despite normal x-ray then MRI should be done to explore other possible cause.
A 18-year-old female asked:

I have the flu and am struggling to breath with bad chest pains and shooting pains down my left arm?

1 doctor answer1 doctor weighed in
Dr. Martin Raff
Infectious Disease 56 years experience
See a doctor: This no longer sounds like influenza. If flu to begin with this can predispose you to secondary acute bacterial pneumonia which can be potentially very severe and even fatal. Please go to an emergency room asap and be examined and treated. Do not wait. Hope you are better soon.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Talk to a doctor
$30 per visit with
Last updated Feb 9, 2017
Connect with a U.S. board-certified doctor by text or video anytime, anywhere.
$30 per visit with


Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.