Tooth Pain After a Filling or Crown: Normal or an Emergency?
September 30, 2026
You had the filling or crown done, you paid for it, and now the tooth hurts. That is confusing and a little alarming. The good news: some soreness after dental work is normal and goes away on its own. The important part is knowing the difference between “normal and settling” and “something is wrong,” because the second kind gets worse the longer you wait. This guide gives you that difference in plain language, for patients in Fairfield, CA 94534 and anyone else searching at 11 pm.
What is normal after a filling or crown
- Sensitivity to cold for a few days up to a few weeks, that fades within seconds once the cold is gone
- Tenderness when you bite for the first few days, gradually improving
- Sore gums around the tooth for a few days, from the work itself
- A slightly “odd” feeling to the bite for a day or two while your mouth adapts
The pattern is the key. Normal soreness gets a little better every day. If yours is steady or getting worse after a week, it is not the normal kind.
The three signs it is not normal
| What you feel | What it usually means | What to do |
|---|---|---|
| Sharp pain every time you bite, not improving after a week | The filling or crown is a fraction too high, so that tooth hits first | Call today. A two-minute bite adjustment fixes it; leaving it can crack the tooth |
| Pain that lingers for minutes after hot or cold, or wakes you at night | The nerve inside the tooth is inflamed or infected | Call today. This is the sign that a root canal may be needed, and it will not settle by itself |
| Swelling in the gum or face, bad taste, fever | An abscess is forming under the tooth | Same day. See abscess warning signs; ER if swelling spreads toward the eye or neck |
Why a tooth can hurt after a good filling
This is the part people find reassuring. A deep cavity sits close to the nerve. Removing the decay and placing the filling protects the tooth, but the nerve has been through a lot and can stay irritated for weeks before it calms down. In most cases it does calm down. In some, the nerve was already too damaged to recover, and it only becomes obvious after the filling. That is not a failed filling; it is a tooth that needed more than a filling, and the fix is a root canal, after which the filling or crown you already have often stays.
Crown-specific problems
A new crown that hurts on biting is almost always sitting a little high; adjusting it takes minutes. A crown that feels loose, or that lets cold in around the edge, may have a gap under the margin, which needs checking before decay gets in. If the crown comes off entirely, keep it and read what to do when a crown or filling falls out.
What to do tonight
- Take ibuprofen or acetaminophen as directed on the label; ask your pharmacist if you take other medications
- Chew on the other side and avoid very hot, cold or hard foods on that tooth
- Rinse with warm salt water if the gum is sore
- Do not put aspirin or clove oil directly on the gum; it burns the tissue
- If the pain wakes you, sleep with your head raised on an extra pillow
Then call in the morning, or now if there is swelling. If the work was done at our office, the check is part of the treatment; if it was done elsewhere, we will still see you the same day. Dr. Navjot Singh explains how he assesses a sore tooth in his emergency dentistry overview, and our night-time tooth pain guide covers why it always feels worse after dark.
Sore tooth after a filling or crown? Get it checked today in Fairfield, CA 94534
A bite adjustment takes minutes. A nerve that is dying does not wait. Either way, one visit tells you which it is.
Emergency Dentist Fairfield — Dr. Navjot Singh, DDS
1357 Oliver Rd, Fairfield, CA 94534
Monday–Friday 8AM–5PM
Call (707) 422-3500 and say it is urgent, or request a same-day visit online.
Serving Fairfield, Suisun City, Vacaville, Cordelia, Green Valley and Travis AFB.
Frequently Asked Questions — Tooth Pain After a Filling
How long should a tooth hurt after a filling?
Mild cold sensitivity and biting tenderness can last a few days to a few weeks and should improve daily. Pain that is steady or worse after a week, or that lingers after hot and cold, needs to be checked.
Why does my new crown hurt when I bite?
Usually because it sits slightly high and hits before the other teeth. A quick bite adjustment fixes it. Left alone, the extra force can crack the tooth or inflame the nerve.
Does pain after a filling mean I need a root canal?
Not always. Nerves near a deep filling can be irritated for weeks and recover. Lingering pain after hot or cold, throbbing at night, or swelling are the signs the nerve will not recover and a root canal is needed.
Can I be seen if the filling was done at another office?
Yes. Emergency Dentist Fairfield sees patients the same day regardless of where the original work was done.
What can I take for tooth pain after a filling?
Over-the-counter ibuprofen or acetaminophen as directed on the label. Do not place aspirin or clove oil on the gum. If pain needs medication for more than a few days, have the tooth checked.
This article was written by Dr. Navjot Singh, DDS, who treats dental emergencies for patients in and around Fairfield, CA.