After getting a filling, the most important thing is to protect the tooth while the numbness wears off, which typically takes one to three hours. What you eat, drink, and do during the first 24 hours depends largely on what type of filling you received: composite resin (tooth-colored) or amalgam (silver/metal).
Eating and Drinking After Your Filling
Composite fillings harden instantly under the curing light your dentist uses during the procedure, so they’re ready for normal use almost immediately. Amalgam fillings take up to 24 hours to fully set, which means you need to be more cautious with that type.
Regardless of filling type, wait until the numbness fades before eating or drinking anything. Chewing while your mouth is numb makes it easy to bite your cheek, tongue, or lip without realizing it. Once sensation returns, you can sip cool or room-temperature water with either filling type.
For composite fillings, hold off on hot drinks like coffee or tea for two to three hours. With amalgam fillings, wait a full 24 hours for hot beverages. Soda, acidic juices, and alcohol should be avoided for 24 hours no matter which material was used. Sugary and acidic drinks can interfere with the bond between the filling and your tooth, and alcohol can interact with local anesthesia still in your system.
When you do start eating, stick to soft foods for the rest of the day. Avoid chewing directly on the filled tooth, especially with amalgam fillings that haven’t fully hardened. Hard, crunchy, or sticky foods can dislodge or damage a new filling before it’s had time to settle in.
Managing Sensitivity and Discomfort
Some sensitivity to hot, cold, or pressure is completely normal after a filling. The procedure itself irritates the nerve inside the tooth, particularly when the cavity was deep and the filling sits close to those nerve endings. This sensitivity usually improves within a few days to a couple of weeks.
For pain relief, the American Dental Association recommends combining ibuprofen and acetaminophen. A typical dose is 400 mg of ibuprofen (two standard pills) taken with 500 mg of acetaminophen. Take the first dose about an hour after the procedure, ideally before the anesthesia fully wears off, so you stay ahead of any discomfort. Take these with water and a small amount of soft food to avoid stomach upset. Avoid alcohol while using these medications.
How to Tell If Your Filling Is Too High
Your dentist checks your bite before you leave, but it’s hard to assess bite alignment accurately when your mouth is still numb. Once the anesthesia wears off, pay attention to how your teeth come together. A filling that sits even slightly too high can cause problems that worsen over time.
Signs of a high filling include:
- Sharp pain when biting down or chewing, especially a shooting sensation that wasn’t there before
- An uneven bite where your teeth don’t meet evenly when you close your mouth
- Jaw pain or stiffness from the uneven pressure straining your jaw muscles
- Headaches that develop in the days following the procedure
A high filling isn’t something that resolves on its own. Left uncorrected, the extra pressure can crack the filled tooth, strain the jaw joint, and irritate surrounding gum tissue. The fix is simple: your dentist shaves down the filling slightly until your bite feels even again. It takes just a few minutes and usually doesn’t require anesthesia.
Warning Signs That Need Attention
Normal post-filling sensitivity is mild and gradually improves. Certain symptoms, however, point to a problem that needs professional attention:
- Pain or sensitivity that lasts longer than one to two weeks or gets worse instead of better. This can signal a gap between the filling and the tooth, or an issue with how the filling was placed.
- Throbbing pain or swelling near the filled tooth. Continuous throbbing, especially with visible swelling, may indicate an infection or nerve damage from decay that was very close to the tooth’s pulp. This requires prompt dental care.
- A rough, chipped, or cracked feeling on the filled tooth. This could mean the filling has fractured or wasn’t placed securely.
Exercise and Daily Activities
There’s no strict medical ban on exercise after a filling, but it’s smart to wait until the numbness wears off. Local anesthesia can affect your coordination, and vigorous activity while numb increases the chance of accidentally biting your cheek or tongue. Once full sensation returns, typically within a few hours, you can resume your normal routine.
Protecting Your Filling Long-Term
A filling replaces damaged tooth structure, but the tooth around it is still vulnerable to new decay. Bacteria tend to accumulate along the edges where the filling meets the natural tooth, and decay in that area (called secondary decay) is one of the most common reasons fillings eventually need replacement.
Brush twice a day with fluoride toothpaste, which strengthens the enamel surrounding the filling. Floss daily, paying attention to the spaces around the filled tooth where plaque builds up. Avoid chewing on hard objects like ice, pen caps, or hard candy, all of which can crack both fillings and natural teeth. Regular dental checkups let your dentist monitor the filling’s condition and catch any early signs of wear or new decay before they become bigger problems.