Root canal throbs from thime to time.... why?
828561
It's the nature of the beast. If a little thread of nerve is left around (as it often is) you feel the throbbing for a while
724193
Everyone here is right.  The deeper the filling is the more likely it is to have effected the nerve.  The way my dentist explained it to me was 'If the nerve has been disrupted, it will eventually die. It may not die today or next year but it will eventually...leading to a root canal'.  I notice sometimes when I chew gum the same thing happens;  I may get a dull ache in a tooth that has a filling in it.  Every time it occurs I panic that the nerve in the tooth has died and the abscess is setting in.  Sometimes it's the case and sometimes it's just sensitive.  The only way I can ever be sure is to have the dentist x-ray it.  If the nerve is dead, yes you will need a root canal.  If it's a molar, I suggest getting a crown.  Once the root canal is done, the tooth will weaken and be easier to break.  Crowns are pricey but well worth it.  Depending on your dental insurance, you may decide to pull it which would be the cheapest route.  Good luck!
567960
You need to go back to your dentist and make him fix this! NOW!\n\nIt should only have been open for 3 to 5 days.
389851
no not suppose to be normal u have to visit your dentist and make  x ray for that\nmany reasons can cause tenderness on bitting it may be due to presence of preapica pathosis \nor may be due to bacterial flare up\nor due to high spot in your crown filling\nor may be due to failure to do proper root canal treatment\ntry to check your regional lymph node to se if there is bacterial infection\nu have to consult your dentist as soon as possible
711857
Sounds like a really bad case of gingivitis to me.   You probably needs to rinse with a salt water solution several times a day.  Use a soft tooth brush.  See your dentist again.
289813
It could be that the temporary crown is a little high and may need to be adjusted... get back in to see your dentist.  You shouldn't be experiencing any sensitivity to cold, etc if you have had a root canal... sensitivity is normal for a tooth that has not had a root canal, but not normal for a tooth that has.
1040912
Chances are you will need a root canal due to the significant microleakage of the resin material.  DON'T TAKE THEM OUT!!!\n(Unless your restoration is failing!)  These restorations are extremely technique sensitive.  Over-drying the tooth before the resin is placed can also cause extreme sensitivity.
826212
Your mouthwash might be irritating the insides of your cheeks.  Usually mouthwashes have a high concentration of alcohol.  I have to dilute mine with water whenever I rinse. You should also check and see if your toothpaste is irritating you, too.\n\nTry stopping the mouthwash and see if you stop sloughing. If not, then, it's your toothpaste.\n\nNothing to be overly concerned with. Just switch toothpaste brands to see which one works the best.
478781
Although I am not familiar with this, the problem isn't with your teeth - its in the gums.  Try proper brushing techniques.
535867
I had a similar issue.  Had a root canal on one..and the one behind it was even worse.  I ended up having the back one pulled and I am so glad I did!  It feels so much better and the dentist told me after he pulled it that even if I had had the root canal he's not sure how long the tooth would have stayed healthy.  Sometimes its better for your health to just get it out of there.
859782
When it's generalized pain in the maxillary it's usually just your sinuses.  Since your maxillary teeth roots are so close to your sinuses that when the sinus cavity is inflammed it messes with the roots.  Your fine and if so many different opinions say the rct is fine you're good to go.  Just keep treating the sinuses and your complaint should resolve.
766630
Yes, it like a piece of fruit, once the decay starts a good cleaning wouldn't stop it- it will continue to grow.  The decay has to be removed before it travels to the nerve chamber and then you need a root canal or extraction.  Get the tooth filled and make payments before it gets costly!
541958
Need to see a doctor first could just be a sinus infection, can cause serious pain and pressure in your teeth.
1156634
Either the hole isn't hitting the nerve (YET!) or have you been having problems with this tooth in the past? Had it been hurting for a while? Have you had a root canal in the past?\n\nAn exposed nerve will HURT! But after it's been exposed for a long time, the pain may stop - the nerve can and will decay - basically, it does the same thing as a root canal - all by itself. However, you're still dealing with a tooth that is probably decaying at a rapid rate. You're very prone to an abscess - and you don't want any of that!!\n\nEven if this isn't hurting, you need to get to a dentist ASAP.\n\nGood Luck!
864197
I've had a lot of root canals done before, and even after months, sometimes they do that. If you had an abcess, you would know it, you would be in extreme pain, and you would look like a chipmunk. It's just your gums adjusting to the changes. Mouths are really sensitive to dental work, and root canals can take a while to adjust to. It will go away with time.
734838
Not after a month has passed.  Go back to the dentist before it leads to further problems.
139456
Yikes, that must be kind of scary! Ask your doctor, since no one else answered, and I have no idea what could be causing this.