A filled tooth may ache because the filling is too high, a deep cavity was near the nerve, the tooth is healing, there are micro-leaks around the filling or, rarely, an allergy to the material. Mild sensitivity in the first days is normal and usually fades within 1-2 weeks. A high filling is fixed with a simple bite adjustment.
- The most common cause is a filling that sits too high on the biting surface.
- Toothpaste for sensitive teeth and a soft brush reduce sensitivity.
- Avoid chewing on the painful side.
- See your dentist if pain lasts longer than 2 weeks or gets worse.
- Swelling, inflammation or a cracked filling requires a check-up.
A dental filling is one of the most common dental procedures used to repair decayed or damaged teeth. However, after the procedure, some patients may feel twinges, sensitivity or pain in the filled tooth. So, why does a filled tooth hurt? Although this is usually a temporary adjustment period, it can sometimes signal a problem that requires professional attention.
In this article, we explain the causes of sensitivity after a dental filling, how you can cope with it and when you should see your dentist.
Common Causes of Tooth Sensitivity After a Filling
It is quite natural for the tissues around the tooth to be sensitive after a filling. However, the main causes behind the sensitivity are:
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High Filling: This is the most common problem. When the filling material does not fully match the biting surface of the tooth or sits slightly high, extra pressure is placed on the tooth during chewing. This causes a sharp pain.
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Deep Cavity and Proximity to the Nerve: If the cavity was very deep and reached an area close to the nerve, the nerve endings may become irritated during the procedure. This brings sensitivity to hot and cold.
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Healing Process: The work done on the enamel and surrounding tissues during the procedure causes the tooth to go through a "repair" process. This usually lasts from a few days to two weeks.
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Micro-leakage: If the filling material does not adapt perfectly to the tooth surface, microscopic gaps may remain between the filling and the tooth. This can allow bacteria to seep in and cause sensitivity.
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Allergic Reactions: Although rare, some patients may be sensitive to filling materials (especially some amalgam fillings).
Frequently Asked Questions (FAQ)
Is it normal for a filled tooth to be sensitive?
Yes, mild twinges triggered by hot, cold or pressure in the first few days after the procedure (usually 3-7 days) are considered normal. However, if the sensitivity does not gradually decrease or the pain becomes more severe, a check-up may be needed.
How long does pain last after a filling?
Mild sensitivity usually goes away on its own within 1-2 weeks. If pain has continued for more than 2 weeks or is limiting your daily life, you should contact your dentist.
What can be done at home to reduce tooth sensitivity?
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Use toothpaste made for sensitive teeth.
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Choose a toothbrush with soft bristles.
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Avoid very hot or very cold foods for a while.
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Try not to chew on the painful side.
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You can take the painkillers recommended by your dentist.
When should I see a dentist?
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If the pain does not go away with painkillers or keeps getting worse.
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If you have severe pain that wakes you up at night.
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If you see swelling, redness or signs of inflammation in the gums.
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If you notice a crack or wear on the filling.
Conclusion: When Should You Seek Professional Help?
Temporary sensitivity after a filling usually disappears on its own. However, it is important not to wait it out thinking "it will pass" and let the pain become chronic. Especially in cases such as a high filling, a simple polishing procedure (occlusal adjustment) by your dentist can relieve the pain instantly. Don't neglect your dental health; whenever you are in doubt, consulting a specialist dentist is the healthiest approach.
Note: This information is for general informational purposes. If you are experiencing ongoing pain in a filled tooth, you can book an appointment at our clinic and see our expert dentists for an accurate diagnosis and treatment plan.
