If you just had a cavity filled at our office in Everett and the tooth now aches on cold or when you bite, you’re dealing with tooth sensitivity after a filling. It’s common, it’s usually short-lived, and most of the time it settles on its own within a couple of weeks.
So here’s what’s normal, what’s not, and when it’s worth a call.
Is It Normal for a Tooth to Be Sensitive After a Filling?
Yes, for most people. A filled tooth was just worked on, and mild sensitivity to cold, sweets, or pressure for a few days up to about two weeks is a normal part of settling down.
Deeper fillings tend to be more sensitive at first, since the repair sits closer to the nerve. As long as it’s easing over time rather than getting worse, it’s usually nothing to worry about.
Why Is My Tooth Sensitive After a Filling?
The tooth and the nerve inside it were disturbed while we cleaned out the decay and placed the dental filling, so they stay a little reactive while they calm down. That’s why cold, sweet, or pressure can set off a short zing for a while afterward.
This kind of sensitivity should trend one direction: down. A tooth that feels a bit better each week is doing exactly what it should.
Why Does My Filling Still Hurt Weeks or Months Later?
When the sensitivity drags on past a few weeks, or it eased off and then came back, two causes are usually behind it.
- A filling that sits a little high, so it takes the force every time you bite. We fix this with a quick bite adjustment.
- An irritated nerve that hasn’t settled, which sometimes needs a root canal.
A high bite is the common and easy one, and adjusting it usually takes just a few minutes. Pain that lingers on heat, throbs on its own, or keeps you up at night is the pattern that points more toward the nerve, and that one is worth having checked.
How Do I Relieve Sensitivity After a Filling?
While the tooth settles, a few simple things help.
- Use a desensitizing toothpaste and go easy on very hot, cold, or sweet foods for a few days
- Chew on the other side until the tooth feels like itself again
- Keep brushing and flossing gently so the area stays clean
These make the healing stretch more comfortable. They won’t speed up a tooth that has a real problem, so if it isn’t improving, let us take a look.
When Should I Call the Dentist About a Filling?
Most post-filling sensitivity fades on its own, but a few signs are worth a call. Reach out if the tooth feels tall or off when you bite, if the pain turns sharp on biting, if it lingers on heat or throbs on its own, or if it hasn’t eased after two to three weeks.
A bite adjustment is quick, and if something more is going on, a short exam finds it fast. Either way, you don’t have to guess.
Frequently Asked Questions
How long should a tooth be sensitive after a filling?
Usually a few days up to about two weeks. Deeper fillings can take a little longer. What matters is the direction: it should be easing, not building.
Why does my filling hurt when I bite down?
Often the filling sits a hair too high, so it takes the pressure first. It’s a quick adjustment. Sharp biting pain that sticks around can also point to an irritated nerve, so it’s worth checking.
Can a filling fall out and cause sensitivity?
Yes. If a filling loosens or falls out, the exposed part of the tooth reacts to cold, heat, and sweets again. Give us a call so we can replace it before decay gets back in.
Does a sensitive filling mean I need a root canal?
Usually not. Most sensitivity settles on its own. A root canal only comes up when the nerve stays inflamed, which shows up as lingering heat pain or throbbing rather than a quick zing.
Is it normal for a new filling to be sensitive to cold?
Yes. Short-term cold sensitivity is one of the most common things people notice after a filling, and it usually fades within a couple of weeks.
The Bottom Line
Tooth sensitivity after a filling is usually a normal part of healing that fades within a couple of weeks, especially the quick cold or sweet zing. When it drags on, turns sharp on biting, or throbs on its own, that’s the sign to come in, whether it needs a simple bite adjustment or a closer look at the nerve. Keeping up with regular visits is a core part of good preventive care and catches these things early.
Whether the tooth is just settling or the ache won’t quit, you can book a visit and let our team take a look. Call (425) 743-3911, Monday through Tuesday, 9 am to 6 pm, and Wednesday through Friday, 8 am to 5 pm.