Why Does My Tooth Hurt More After Filling? Common Dental Issues Explained

The tooth hurts more after getting a filling?

Doctor, I have a large molar on the lower left side that originally hurt only when I ate something cold or acidic.
Later, I had a dentist fill the cavity, which didn't seem very deep.
The dentist removed the previous silver filling, excavated the decayed part, and then used a resin material to fill it.
However, after the filling, I experienced persistent intermittent pain.
It was fine before the filling, but now it hurts even more, affecting my daily routine and work.
What could be the reason for this?

sunny, 20~29 year old female. Ask Date: 2013/04/24

Dr. Zhang Xiangyuan reply Dentistry

Dear netizen,
In response to your question, after a left lower molar has been refilled, if you are experiencing persistent intermittent pain, it is important to consider a few factors.
Clinically, after a tooth has been refilled, some individuals may experience temporary sensitivity to hot, cold, or acidic stimuli, especially if the cavity was deep or close to the pulp.
However, if the tooth continues to hurt or if the pain lingers for a long time after exposure to temperature changes, it is advisable to consult your dentist.
They can re-evaluate the filling site for any abnormalities or assess whether further treatment, such as root canal therapy, is necessary.
Thank you for your inquiry.

Reply Date: 2013/04/24

More Info

Tooth pain after a filling can be a frustrating and concerning experience. It’s important to understand that there are several reasons why your tooth may hurt more after a dental filling, especially if the pain has transitioned from being occasional to persistent. Here are some common explanations for this phenomenon:
1. Inflammation of the Pulp: When a tooth is filled, the procedure can sometimes irritate the dental pulp (the innermost part of the tooth containing nerves and blood vessels). If the decay was close to the pulp, the irritation can lead to inflammation, resulting in pain that may feel more intense than before the filling.

2. High Filling: If the filling is too high, it can cause your bite to be misaligned. This means that when you bite down, the filled tooth may be receiving more pressure than it should, leading to discomfort or pain. A simple adjustment by your dentist can often resolve this issue.

3. Sensitivity to Temperature: After a filling, it’s common for teeth to be sensitive to hot and cold temperatures. This sensitivity can be due to the materials used in the filling or the fact that the tooth was previously damaged. If the sensitivity persists beyond a few weeks, it may indicate a deeper issue.

4. Cracked Tooth Syndrome: Sometimes, the process of drilling out decay can inadvertently cause micro-cracks in the tooth structure. These cracks can lead to pain, especially when chewing or when the tooth is exposed to temperature changes.

5. Infection: If the decay was extensive, there might have been an underlying infection that was not addressed during the filling. This can lead to persistent pain and may require further treatment, such as a root canal.

6. Material Reaction: Some patients may have a reaction to the materials used in the filling, particularly if they are sensitive to certain metals or resins. This can lead to inflammation and pain.

7. Underlying Dental Issues: If there were other dental issues present, such as gum disease or additional cavities, these could also contribute to ongoing pain after a filling.

Given your situation, it’s crucial to follow up with your dentist as soon as possible. They can perform a thorough examination, possibly including X-rays, to determine the exact cause of your pain. It’s important not to ignore this discomfort, as it can lead to more serious complications if left untreated.

In the meantime, here are some tips to manage your discomfort:
- Over-the-Counter Pain Relief: Nonsteroidal anti-inflammatory drugs (NSAIDs) like ibuprofen can help alleviate pain and reduce inflammation.

- Avoid Certain Foods: Try to avoid very hot, cold, or sugary foods that might exacerbate the pain.

- Good Oral Hygiene: Continue to maintain good oral hygiene by brushing and flossing gently around the affected area to prevent further irritation.

In conclusion, while it’s not uncommon to experience some discomfort after a filling, persistent pain is a sign that something may not be right. It’s essential to communicate openly with your dentist about your symptoms so they can provide the appropriate care and ensure your dental health is restored.

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