You walked out of the dental chair expecting relief. Instead, your tooth is throbbing. Now you’re sitting at home wondering if something went wrong — or if you’re just being dramatic.
You’re not being dramatic. And no, nothing has necessarily gone wrong.
A toothache after a filling is actually more common than most people realise. But “normal” has limits, and knowing the difference matters.
Why Your Tooth Hurts After a Filling
When a dentist removes decay and places a filling, the tooth goes through a lot. The drilling creates heat and vibration. The surrounding tissue gets temporarily irritated. The nerve inside the tooth — which had no idea what was coming — suddenly has a material sitting close to it, sometimes very close.
For most people, this settles down within a few days to two weeks. The pain is usually a dull ache or a sharp twinge when you bite down or drink something cold. That’s your tooth recalibrating, not failing.
Composite (white) fillings can also cause something called post-operative sensitivity because they bond differently to the tooth structure than older amalgam fillings. Your dentist would have warned you about this — but the reality of it still catches people off guard.
When Should You Actually Be Concerned?
Here’s where people often go wrong: they either panic too soon or they wait far too long.
Watch out for these signs that something needs attention:
Pain that gets worse after the first week rather than better is a red flag. Discomfort that fades within a few days is recovery. Pain that intensifies is not.
If your bite feels off — like one tooth is hitting before the others — tell your dentist. A filling that sits even slightly too high changes how your jaw closes, and that repeated pressure causes a specific kind of aching that won’t resolve on its own. This is a quick, easy fix. Don’t sit on it.
A cracked tooth underneath the filling, nerve involvement that wasn’t caught during treatment, or an allergic reaction to filling materials are less common but real possibilities. If you’re experiencing sharp, shooting pain that radiates into your jaw or ear, or if you’re getting spontaneous pain at night without any temperature trigger, get back to your dentist. That picture is more consistent with nerve involvement.
What You Can Do at Home
For normal post-filling sensitivity, avoid temperature extremes for a few days. Very hot coffee, ice cold water — give your tooth a break from those. Over-the-counter pain relief like ibuprofen handles the inflammation side of things better than paracetamol for most people, though check with a pharmacist if you have any health conditions.
Chew on the opposite side of your mouth while the filling settles. It sounds obvious, but most people forget.
Sensitivity toothpaste containing potassium nitrate or stannous fluoride can also help calm the nerve response over time. Use it consistently for at least two weeks before expecting results.
The One Thing Worth Remembering
Pain after a filling is common. Pain that escalates or won’t quit after two weeks is a signal — not something to manage at home with painkillers.
Your dentist wants to know if something isn’t right. A follow-up appointment to check your bite or assess the tooth takes minutes and costs nothing in most practices compared to leaving a problem to develop into something more complicated.
If you’re unsure, call. That’s genuinely what we’re here for.