A new filling feels high when it’s slightly taller than the natural bite, often because your mouth was numb when the bite was checked. It’s common, it’s easy to fix, and it’s not dangerous if handled quickly. Call the clinic within a few days for a short adjustment, which usually takes 5 to 10 minutes. Don’t wait for it to wear down, because a high spot can bruise the tooth and cause pain that looks like a bigger problem. Most dental fillings feel normal again right after adjustment.
Here’s what’s going on. Your teeth can feel differences as small as 10 to 20 microns, thinner than a human hair. When a filling is even a fraction too tall, that tooth hits first every time you close.
Numbness makes it harder to judge in the chair. You bite on the marking paper, it feels fine, then 3 hours later the anaesthetic wears off and something’s clearly off. The same thing can happen with a new dental crown or onlay.
If the tooth starts throbbing, swelling or hurting badly at night, that’s different and may need an emergency dental visit to check the nerve.
In a small number of cases, ongoing pain after a deep filling means the nerve was already inflamed, and root canal treatment becomes the long-term fix. Most of the time, though, it’s just the bite, and a quick polish solves it. You can see the clinic’s full list of dental services if you’re comparing care options.
What does a “high” filling feel like?
A high filling makes one tooth touch before the others when you close, so your bite feels uneven, like something is stuck between your teeth. You might notice:
- Your teeth don’t close together the way they used to
- One tooth “hits first” or feels tall
- Pain or tenderness when you bite down on that tooth
- Soreness that builds over 1 or 2 days
- Jaw muscle ache on that side
- Sensitivity to cold or pressure
Why does a filling end up too high?
- Numbness. It’s hard to bite naturally when half your face is asleep.
- Posture in the chair. Lying back changes how the jaw closes compared with sitting upright.
- Tired jaw muscles. After holding your mouth open for 30 to 60 minutes, your bite can shift slightly.
- Side-to-side movements. A filling may be fine when you bite straight down but hit when you chew or slide your jaw.
- Large fillings. Rebuilding a big chewing surface means more contact points to get right.
None of this means the filling was done badly. Bite adjustments are a normal part of restorative dentistry.
What happens if you leave a high filling?
Some people hope it’ll wear down on its own. Composite fillings do wear a little, but not fast enough to save the tooth from stress. Meanwhile:
| Problem | What happens |
|---|---|
| Bruised ligament | The tooth gets tender to bite on, sometimes for weeks |
| Nerve irritation | Constant extra force can inflame the pulp, causing lingering sensitivity |
| Cracking | The filling or the opposing tooth can chip or crack |
| Jaw strain | Muscles work around the high spot, leading to soreness or headaches |
| Misdiagnosis | Pain can be mistaken for needing a root canal |
The fix is simple, and doing it early prevents all of this.
Is it the bite or something else?
Not all post-filling discomfort comes from a high bite. Here’s how to tell the common causes apart.
| Symptom | Likely cause | What to do |
|---|---|---|
| Pain mainly when biting, tooth feels tall | High filling | Bite adjustment |
| Short zings with cold that fade over 1 to 3 weeks | Normal post-filling sensitivity | Sensitivity toothpaste, wait and watch |
| Ache that lingers after hot or cold, or throbbing at night | Inflamed nerve (pulpitis) | See the dentist; may need root canal |
| Sharp pain on release of bite | Possible crack | Exam, possibly a crown |
| Sore gum next to the filling | Gum irritation from the clamp or matrix band | Salt-water rinses; settles in days |
| Sharp zap when foil or a metal fork touches it | Galvanic shock between different metals | Usually fades; mention it |
How does a dentist adjust a high filling?
- Quick check-in. You’ll describe what feels off and when it hurts.
- No numbing, usually. Adjustments are done without anaesthetic so you can feel your natural bite.
- Marking paper. You tap and grind on thin coloured paper. High spots show up as darker marks.
- Polishing down. The dentist gently smooths the high spot with a fine bur. It feels like a light buzzing, no pain.
- Re-check. You bite again, sitting upright, and slide side to side. Repeat until the bite feels even.
- Final polish. The surface is smoothed so it doesn’t trap plaque.
Most people feel the difference immediately. The tooth may stay a bit tender for a few days while the ligament settles.
How long is it normal for a tooth to be sensitive after a filling?
Mild sensitivity to cold, air or biting is normal for a few days and can last up to 2 to 4 weeks with deeper fillings. It should get steadily better, not worse.
- Getting better each week: normal healing
- Staying the same after 2 weeks: book a check
- Getting worse, throbbing or waking you at night: call the clinic promptly
Does a high filling only happen with tooth-coloured fillings?
No. It can happen with composite (white) fillings, amalgam (silver) fillings, crowns, onlays and even temporary fillings. Composite fillings are bonded and set hard right away, so a high spot is felt immediately once numbness wears off. Crowns are usually adjusted at the fitting appointment, but small changes may still be needed a week later.
Myths about pain after fillings
- “Pain after a filling means it was done wrong.” Some sensitivity is a normal reaction to the tooth being worked on.
- “It’ll wear down on its own.” Not quickly enough. The tooth suffers in the meantime.
- “I’ll need a root canal.” Most post-filling pain settles with a bite adjustment or time. Only a small share of deep fillings lead to root canal treatment.
- “Going back is a hassle for the dentist.” Adjustments are routine and usually free of fuss. Dentists want to know.
Real-life examples
Common mistakes after a filling
- Waiting weeks for a high filling to “settle”
- Chewing hard food on a freshly numbed side and biting your cheek or tongue
- Assuming all pain is normal and not calling
- Avoiding that side so long that the jaw gets sore
- Skipping follow-ups because you don’t want to bother anyone
How to care for a new filling
- Wait until numbness wears off before eating.
- Chew carefully on the other side for the first day if the tooth is tender.
- Use a sensitivity toothpaste for a couple of weeks if cold bothers you.
- Brush and floss normally. Fillings need cleaning like natural teeth.
- Wear a night guard if you grind, to protect both the filling and the tooth.
- Call within a week if the bite still feels off.
Why is your bite so sensitive to tiny changes?
Each tooth sits in a socket on a thin cushion called the periodontal ligament. It’s packed with pressure sensors, a bit like the fingertips of your mouth. They tell your brain how hard you’re biting so you don’t crack a tooth on a stray bit of shell.
When one tooth hits early, those sensors fire every time you swallow, which is several hundred times a day. That’s why a filling that’s only slightly high can make a tooth so sore so quickly. Remove the extra contact and the ligament calms down.
Your bite is also a team effort. Back teeth are designed to share chewing forces evenly, and front teeth guide the jaw when it slides. A high spot on one tooth disturbs that balance, so the muscles start working around it. That’s where the jaw ache and the odd “my bite feels wrong” feeling come from.
What about children’s fillings?
Kids often can’t explain that a filling feels high. Signs to watch for after a child’s filling:
- Chewing only on one side
- Complaining that a tooth “feels funny” or “too big”
- Rubbing their cheek or jaw
- Avoiding foods they normally like
Also check that they didn’t chew their numb lip or cheek after the appointment, which is very common and can look like a swelling the next day. Call the clinic if you’re unsure.
Who should you call in Concord?
Whether your filling was done at Smart Care Dental or somewhere else, a bite check is quick and worth doing. Choose a dentist registered with the RCDSO so the tooth is properly assessed and not just adjusted.
Smart Care Dental is a trusted dental office in Concord and Vaughan offering family, cosmetic and restorative dentistry under one roof. The clinic is a Certified Invisalign provider and accepts new patients as well as CDCP (Canadian Dental Care Plan) patients. Extended evening and weekend hours make it easier to pop in for a quick adjustment, and same-day or emergency appointments are available when a tooth really hurts.
Many local families think of it as their family dentist in Concord. Call +1 905-738-4970, email info@smartcaredental.ca, or book through https://smartcaredental.ca/. The clinic is in Concord, Vaughan, ON.
Frequently asked questions
How long does it take for a high filling to feel normal?
After a bite adjustment, most people feel better right away. Mild tenderness can last a few days while the ligament around the tooth settles.
Will a high filling wear down by itself?
Only very slowly. In the meantime the extra pressure can bruise the tooth and inflame the nerve, so an adjustment is the better choice.
Is it normal for my bite to feel different after a filling?
A slight difference for a few hours is common while you’re numb. If your bite still feels off the next day, call for a check.
Can a high filling cause jaw pain or headaches?
Yes. When one tooth hits first, jaw muscles work harder to avoid it, which can cause soreness or tension headaches.
Does a filling adjustment hurt?
No. It’s done without anaesthetic, takes a few minutes and feels like light polishing.
Conclusion
A new filling that feels high is common and usually fixed with a quick, painless adjustment.
Waiting for it to wear down only stresses the tooth and can cause unnecessary pain.
If your bite feels off after a filling, a short visit is the easiest way to feel normal again.