Is It Normal to Feel Sensitivity After Dental Filling Between Teeth? - Dentistry

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Sensitivity after dental filling in the interproximal space?


Hello Doctor: I recently used dental floss and found that I couldn't get through the gap between my first and second premolars, so I went to the clinic to have my teeth checked.
The dentist discovered that I had a cavity and performed a filling.
During the filling process, I felt some sensitivity and discomfort.
After the filling, I was able to use dental floss without it getting stuck.
However, about half an hour after returning home, I ate lamb hot pot and felt fine during the meal, but when I rinsed my mouth afterward, I noticed a slight acidity in my teeth, though it wasn't very intense.
Is this normal? Will the filling in the gap be prone to falling out since I have a habit of using dental floss?

Xiao Shen, 20~29 year old female. Ask Date: 2021/01/02

Dr. Lin Jiayong reply Dentistry


Hello: After having a tooth filled, patients may experience mild sensitivity or discomfort due to sensitivity to the filling material.
It is recommended to monitor the situation.
If there is any detachment, please return to the original clinic for treatment.
Thank you! Sincerely, Lin Chia-Yung, Department of Dentistry, Taichung Hospital, Ministry of Health and Welfare.

Reply Date: 2021/01/02

More Info


Experiencing sensitivity after a dental filling, especially between teeth, is not uncommon and can be attributed to several factors. When a dentist performs a filling, they remove decayed tissue and then fill the cavity with a material such as composite resin or amalgam. This process can sometimes irritate the surrounding nerves, leading to temporary sensitivity to temperature changes, pressure, or even certain foods.

In your case, the sensitivity you felt after the filling, particularly when eating something like lamb hot pot, is likely a normal reaction. The filling material may still be settling, and the nerves in the tooth may be reacting to the changes in pressure or temperature. It’s also possible that the filling is slightly higher than the surrounding tooth structure, which can cause discomfort when biting down. This is often referred to as "occlusal sensitivity," and it can usually be resolved with a minor adjustment by your dentist.

Regarding your concern about the filling potentially falling out due to your use of dental floss, it’s important to note that fillings are designed to withstand the forces of chewing and the stresses of daily oral hygiene practices, including flossing. However, if you are using dental floss aggressively or if the filling was not properly bonded, there is a slight chance that it could become dislodged. It’s crucial to be gentle when flossing, especially around newly filled teeth, to avoid putting undue stress on the filling.

If you continue to experience sensitivity or if the discomfort increases, it would be wise to return to your dentist for a follow-up appointment. They can check the filling to ensure it is properly placed and that there are no underlying issues, such as an incomplete removal of decay or an issue with the tooth itself. Additionally, they can assess whether the filling is too high and make necessary adjustments.

In terms of long-term care, maintaining good oral hygiene practices is essential. Continue to brush your teeth twice a day with fluoride toothpaste and floss daily, but do so gently around the filled area. If you notice any changes in the sensitivity, such as it becoming more pronounced or lasting longer than a few days, or if you experience pain when biting, these could be signs of complications that need to be addressed.

In summary, mild sensitivity after a dental filling is generally normal and should improve over time. However, if the sensitivity persists or worsens, or if you have concerns about the integrity of the filling, don’t hesitate to reach out to your dentist for further evaluation. Regular check-ups and open communication with your dental care provider are key to ensuring your oral health remains in good standing.

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