Yes, it's normal for a tooth to become sensitive after a dental filling, especially during the first few weeks following the procedure. This sensitivity can be due to the inflammation of the nerve inside the tooth after the treatment. However, if the sensitivity persists for over a month and a half as you've described, and you experience discomfort when exposed to hot, cold, or biting on hard foods, it's advisable to consult your dentist to ensure that the filling is properly seated and there are no other underlying issues.
Using toothpaste designed for sensitive teeth, like Sensodyne, can help lessen the sensitivity. These kinds of toothpaste contain ingredients that help block the pathways through the teeth that attach to nerves, thereby reducing sensitivity. Here are a few additional tips to help manage tooth sensitivity:
1. Use a soft-bristled toothbrush: Hard brushing can further aggravate the sensitivity, so it's recommended to use a soft-bristled toothbrush and gently brush your teeth.
2. Avoid acidic foods and drinks: Acidic substances can worsen tooth sensitivity, so try to minimize the consumption of things like citrus fruits, tomatoes, and carbonated drinks.
3. Consider fluoride treatments: Fluoride applications, whether in the form of toothpaste, mouthwash, or professional treatments, can help strengthen the enamel and reduce sensitivity.
4. Limit extreme temperature foods: Until your sensitivity decreases, you might want to avoid very hot or very cold foods and beverages.
5. Practice good oral hygiene: Ensure you're brushing twice a day and flossing daily to keep your mouth clean and reduce the chances of sensitivity due to decay or gum disease.
If the sensitivity does not improve or worsens, it's important to visit a dentist, even if it means traveling a bit to get to the clinic where you had the filling done. The dentist can assess whether the filling is too high, needs adjustment, or if there's another issue that needs to be addressed.