Some sensitivity after getting a dental crown is normal and typically peaks in the first 48 to 72 hours, then fades over one to two weeks. Most people see significant improvement or complete relief by that two-week mark. In the meantime, a combination of over-the-counter pain relief, simple home care, and knowing what to watch for can make the recovery much more manageable.
Why Your Tooth Hurts After a Crown
Getting a crown involves reshaping the tooth, taking impressions, and bonding a new restoration in place. All of that work irritates the surrounding gum tissue and, if the tooth still has a nerve, can leave it temporarily inflamed. This mild inflammation of the nerve (called pulpitis) is the most common source of post-crown pain, and it usually resolves on its own.
Beyond normal healing, a few specific problems can cause ongoing discomfort:
- A high bite. If the crown sits even slightly too tall, it absorbs more force than it should every time you chew or clench. This creates a persistent ache or sharp pain when biting down, and it won’t go away until your dentist adjusts the crown.
- Gum irritation. The margins of the crown sit right at or below the gumline, and the tissue there can stay sore for days after placement. You may notice redness or tenderness along the edge of the crown.
- Nerve infection. If you didn’t have a root canal before the crown, the tooth still has living nerve tissue inside. The preparation process can sometimes traumatize that nerve enough for an infection to develop. Old fillings underneath the crown can also leak bacteria toward the nerve over time.
Over-the-Counter Pain Relief
Ibuprofen and acetaminophen work through different pathways, so taking them together provides stronger relief than either one alone. A combination tablet containing 125 mg of ibuprofen and 250 mg of acetaminophen is available over the counter. The standard adult dose is two tablets every eight hours as needed, with a maximum of six tablets per day. If you’re using separate bottles instead, stay under 4,000 mg of acetaminophen total in 24 hours and follow the label directions for ibuprofen.
Ibuprofen is particularly useful here because it reduces inflammation, not just pain. If your discomfort is worst during meals or when drinking something cold, taking a dose about 30 minutes before eating can help you get through the meal more comfortably.
Home Remedies That Help
A warm saltwater rinse is one of the simplest ways to calm irritated gum tissue around a new crown. Dissolve half a teaspoon of salt in a cup of warm water, swish gently for 30 seconds, and spit. You can repeat this a few times a day, especially after meals when food particles may collect near the crown margins.
Desensitizing toothpaste can make a noticeable difference if your main complaint is sensitivity to hot, cold, or sweet foods. Look for a toothpaste containing potassium nitrate as the active ingredient. Potassium ions work by blocking the nerve signals inside the tooth, essentially quieting the nerve so it stops overreacting to temperature changes. For the best effect, brush with it twice daily and consider dabbing a small amount directly on the crown before bed and leaving it in place overnight.
Avoiding very hot or very cold foods and drinks during the first week reduces the number of times you trigger that sensitive nerve. Chewing on the opposite side takes pressure off the crown while the area settles down.
When the Bite Feels Off
A crown that’s even a fraction of a millimeter too high can cause pain that lingers well past the normal healing window. The telltale signs: your teeth don’t meet evenly when you close your mouth, chewing on that side is uncomfortable, or the crown feels bulky or “tall” compared to the teeth around it. Some people also develop new sensitivity to hot or cold on that tooth because the constant extra pressure irritates the nerve.
A bite adjustment is quick and painless. Your dentist will have you bite down on a thin piece of marking paper that leaves colored spots where your teeth contact. Those marks show exactly where the crown is hitting too hard, and your dentist reshapes those spots with a small polishing instrument. The whole process takes a few minutes and rarely requires numbing. If your bite still feels off several days after your crown was placed, call your dentist rather than waiting it out. An uneven bite won’t correct itself, and the longer it goes unadjusted, the more irritated the nerve becomes.
Normal Sensitivity vs. a Deeper Problem
The key distinction is how long sensitivity lasts after the trigger is removed. With normal post-crown sensitivity, a sip of cold water might cause a quick, sharp zing that disappears within a few seconds. This is a sign the nerve is irritated but still healthy, and it will calm down as healing progresses.
Irreversible nerve damage looks different. Sensitivity to heat or cold lingers for more than a few seconds after you remove the trigger. The pain may shift from sharp to a deep, throbbing ache. You might notice that the tooth hurts when your dentist taps on it, or that heat specifically makes it worse (cold sensitivity alone is more benign). When the nerve reaches this stage, it can’t recover on its own, and a root canal or extraction becomes necessary.
Signs You Need to Call Your Dentist
Mild soreness in the first two weeks is expected. But certain symptoms signal something that won’t resolve with home care:
- Severe pain or swelling that isn’t improving. Some swelling in the first day or two can be normal, but worsening pain after the 72-hour mark is a red flag.
- A loose crown or one that falls off. Bacteria can reach the exposed tooth quickly, so this needs attention the same day if possible.
- Pus, a foul taste, or fever. These point to an active infection that needs treatment.
- Lingering sensitivity to heat. Cold sensitivity that fades fast is common. Heat sensitivity that hangs on for several seconds or more suggests the nerve may be beyond recovery.
- An uneven bite that persists past the first few days. This is an easy fix, but ignoring it can lead to more serious nerve irritation over time.
Pain that was improving and then suddenly gets worse after a week or two also warrants a call. That pattern can indicate a new infection developing under the crown, especially if the tooth had a large filling before the crown was placed.