A new filling needs no real "recovery" - but a few small habits in the first 24-48 hours protect the work and reduce sensitivity. Here is the full playbook.
The first 2-4 hours
Composite is fully cured before you leave the chair, but local anesthesia means your lip, cheek, and tongue are numb for 2-4 hours afterward. Two practical guidelines:
- Wait until numbness fades before eating solids. The number-one post-filling injury is biting the inside of your cheek or tongue while still numb.
- Skip very hot drinks until sensation returns - you cannot accurately judge temperature when numb.
Water, lukewarm soup, and yogurt are fine if you are hungry while still numb. Children especially need to be watched - kids will sometimes chew their lip without realizing.
The first 24 hours - what to eat
No strict diet is required after a composite filling, but for the first day:
Easier on a new filling: - Soft foods (eggs, fish, pasta, smoothies, yogurt) - Lukewarm or room-temperature foods - Foods that don't require strong chewing
Avoid for 24 hours: - Sticky candies (taffy, caramel, gummy bears) - can pull at the bond - Very hard foods (hard candies, ice, popcorn kernels) - risk of fracture - Whitening products and acidic foods (citrus, vinegar) - surface still settling
After 24 hours, you can return to normal eating.
Why some sensitivity is normal
Many patients feel mild cold or pressure sensitivity for 1-3 weeks after a filling. This is normal because:
- Drilling, even gentle drilling, irritates the dentin tubules that connect to the nerve.
- Local anesthesia includes a vasoconstrictor that briefly disrupts nerve function - sensitivity returns over hours to days.
- Bonding chemistry shifts the tooth's thermal conductivity slightly until it equilibrates.
- Larger or deeper fillings near the nerve are more likely to be sensitive.
Most sensitivity resolves on its own within 2-3 weeks. Use a sensitivity-focused toothpaste (Sensodyne, Colgate Sensitive) for that period - they really do help.
When sensitivity becomes a problem
Call us if any of the following:
- Sensitivity worsens at week 2 or 3 instead of improving
- Pain on biting (not just on cold) - could mean the bite is slightly high and needs a 3-minute adjustment
- Lingering pain after the cold stimulus is gone for more than 30-60 seconds - possible nerve inflammation
- Spontaneous throbbing pain - call urgently; may need a root canal
- A "high" feeling when biting that did not exist before - bite adjustment needed
- Filling feels rough or floss shreds at the contact - may need polishing
Simple adjustments are 5-minute visits; nerve issues are time-sensitive.
Long-term care for a new filling
Once past the first few weeks:
- Brush and floss normally - fillings are fully integrated.
- Avoid biting on hard objects (ice, pen caps, fingernails).
- If you grind, ask about a night guard.
- Maintain regular cleanings every 6 months - the most common filling failure is decay starting at the margin, caught early at recall.
- Stains around the filling (years later) may be polished off; ask at your next visit.
- Plan to replace fillings every 7-15 years on average - this is normal, not a failure.
Frequently asked questions
- How long should sensitivity last after a filling?
- Mild sensitivity to cold or pressure for 1-3 weeks is normal. If it persists past 3 weeks or becomes severe, call so we can check the bite, restoration, or nerve.
- Can I drink coffee right after a filling?
- Yes, once the numbness has worn off and you can judge temperature. Lukewarm is wiser than scalding for the first few hours.
- Is it normal for the tooth to feel weird?
- A subtle "different" feeling for a few days is normal - your tongue is hyper-sensitive to small surface changes. If it feels rough, sharp, or distinctly tall when biting, call us for a quick adjustment.
- Why does my filling hurt when I floss?
- Floss shredding or catching at a new filling usually means a slight overhang at the gum-line margin. A 2-minute polish fixes it. Call us - never tolerate this for weeks.