Mild tooth pain after a filling typically lasts one to two weeks, with sensitivity gradually fading over that period. Deep fillings placed closer to the nerve may take three to four weeks to fully settle. If your pain is getting worse instead of better, or it’s still significant after two weeks, something beyond normal healing is likely going on.
What Normal Post-Filling Pain Feels Like
The most common sensation after a filling is sensitivity to hot, cold, or pressure. You might notice a short, sharp zing when you sip ice water or bite into something firm. This is your tooth’s nerve reacting to the work that was just done on it, and it’s a normal part of healing. The nerve inside your tooth gets irritated during the drilling and filling process, but in most cases, it calms down on its own.
About 10% of teeth that had no sensitivity before treatment develop new sensitivity afterward. So while post-filling discomfort is common enough to be expected, most people actually heal without any noticeable issues at all. The sensitivity you do feel should be mild and brief, lasting only a few seconds at a time, and it should improve a little each day rather than staying the same or getting worse.
Shallow Fillings vs. Deep Fillings
The depth of your cavity plays a big role in recovery time. A shallow to moderate filling, where the decay didn’t reach deep into the tooth, generally heals completely within two weeks. The nerve was far enough from the action that it recovers quickly.
Deep fillings placed close to the pulp (the soft tissue inside your tooth that contains the nerve and blood supply) are a different story. These can cause mild sensitivity for three to four weeks before everything settles. Your dentist can usually tell you after the procedure whether your filling was deep enough to expect a longer recovery. If they mentioned the cavity was “close to the nerve,” give it the full month before worrying.
The High Spot Problem
One of the most common and fixable causes of lingering pain after a filling is a high spot. This happens when the filling sits slightly above the natural surface of the tooth, so your upper and lower teeth don’t meet evenly when you bite down. It can be hard to detect during your appointment because your mouth is still numb.
A high spot creates pressure points every time you chew, close your mouth, or even clench your teeth at rest. Over time, this uneven pressure can strain your jaw muscles and cause headaches. The pain from a high spot doesn’t fade on its own because the problem is mechanical, not inflammatory. It feels like something is “off” when you close your mouth, and the discomfort is worst when biting down.
The fix is quick. Your dentist can reshape the filling in a few minutes to restore proper alignment. If your bite feels uneven after a filling, call your dentist rather than waiting it out.
When the Nerve Is in Trouble
Sometimes the nerve inside a tooth becomes inflamed after a filling, a condition called pulpitis. In its early, reversible stage, the inflammation can heal once the tooth is properly sealed and left alone. This is essentially what’s happening during that normal one-to-four-week recovery window.
If the inflammation progresses, though, the nerve can reach a point where it can’t recover. The key warning sign is lingering sensitivity to hot or cold that lasts well after the trigger is removed. Normal post-filling sensitivity produces a quick flash of discomfort that fades within seconds. Irreversible nerve inflammation produces pain that hangs around for 30 seconds or more after you take a sip of hot coffee or eat something cold. At that stage, a root canal or extraction becomes necessary because the nerve tissue is dying.
Managing Pain at Home
For the first day or two, anti-inflammatory pain relievers like ibuprofen are your best option. The American Dental Association recommends ibuprofen as first-line treatment for dental pain, taken every four to six hours as needed. For stronger relief, combining ibuprofen with acetaminophen works especially well because the two medications block pain through different pathways in your body.
Beyond medication, a few practical steps help:
- Chew on the opposite side for the first few days to keep pressure off the new filling.
- Avoid temperature extremes in food and drinks while the tooth is still sensitive.
- Skip sticky or very hard foods that put extra stress on the restoration.
If you got a composite (tooth-colored) filling, it’s fully hardened by the time you leave the office thanks to the UV curing light your dentist used. You can chew on it as soon as the numbness wears off, typically one to three hours. Amalgam (silver) fillings take about 24 hours to reach full strength, so wait a full day before chewing on that side.
Signs Something Is Wrong
Normal post-filling pain follows a clear pattern: it starts mild, responds to over-the-counter pain medication, and improves steadily over days. Pain that breaks this pattern deserves attention.
Call your dentist if your pain is getting worse after the first few days instead of better, if sensitivity to hot or cold lingers for more than a few seconds, if you feel a sharp or throbbing pain that comes on spontaneously (without a trigger), or if your bite still feels uneven after a week.
Certain symptoms call for urgent care. A fever above 100.4°F alongside dental pain suggests infection has spread beyond the tooth. Rapid facial swelling, especially near the eye or down the neck, is a serious sign. Difficulty swallowing, breathing, or opening your mouth means the infection is affecting surrounding tissues. Severe, sudden pain that doesn’t respond to any over-the-counter medication may indicate an abscess, where pressure is building around the tooth root. These situations warrant same-day emergency care.