Tooth fillings are used to treat cavities and decay in the mouth, so why would some degree of tooth sensitivity after filling be considered normal? Today we’re going to take a look at dental fillings, why sensitivity may occur, and how you can manage it. At Randwick Smiles we are committed to providing our patients with comfortable dental treatments and high quality tooth fillings.


Why Is Tooth Sensitivity After Filling To Be Expected?

There are a few reasons why some discomfort or pain can be expected after dental fillings are done – and in the majority of cases it may just be a response to the repair work being carried out on your teeth.

When you sit in your dentist’s chair for a filling, your dentist will poke and drill in your damaged tooth, often sparking sensitivity. If your tooth decay was located very close to the root of your tooth, your dentist will have accessed the area to clean it out, and may exacerbate the sensitivity before finalising your filling.

If your dentist does not remove all the decayed matter from your teeth, this can also result in an infection in your tooth pulp.


Tooth And Pain Sensitivity After Filling

If your filling becomes sensitivity a few days after the filling was done, it may allude to a problem with a different part of your tooth, or the filling itself.

When your dentist performs the filling, he or she will inject anaesthetic into your jaw to numb the area. This means your mouth may still be a bit numb after the procedure, and you may not realise that your filling needs some adjustment. If the filling hasn’t been positioned correctly, it may interfere with your ability to have a closed bite.

This point of contact could also cause sensitivity, causing pressure on your tooth root. Your dentist will recommend that you check your bite once the anaesthetic has worn off, and return should you require some adjustments to be made to your filling.

Sometimes the material used to create dental fillings may result in sensitivity. Composite resin dental fillings may shrink back a little, resulting in a gap or space underneath.



When your dentist is cleaning your cavity out, to remove the decayed matter, the drill being used will release heat. Although it is rare, it is possible for the heat of the drill to inflame your tooth pulp (tissue in the middle of your teeth), resulting in Pulpitis.

Sometimes Pulpitis can be reversed. In the cases where it cannot, a root canal will need to be performed in order to save the tooth.


Contact Between Tooth Surfaces

Sometimes patients who have different types of fillings in their mouth find it uncomfortable when the two materials come into contact with one another – for example making contact between a tooth with a gold filling and a tooth with a silver filling may result in an odd sensation.


Allergic Reaction To Dental Fillings

Although unusual, it is possible for some patients to experience allergic reactions to the materials used in fillings. If you are having an allergic reaction, the site of your filling may feel itchy or develop a rash. If this happens, you should contact your dentist immediately so that an alternative filling material can be used.


How To Manage Tooth Sensitivity After Filling

Tooth sensitivity is considered normal in the first two to three days after your filling. If you experience sensitivity after that, or worsening pain you should contact your dentist straight away. You can expect an improvement in sensitivity two to three days after your filling, if not right away, and your tooth should feel better than it did before the filling.

You can manage tooth sensitivity after dental fillings using


Do you need advice about dental fillings, or need to chat with a professional about tooth sensitivity after filling? We would love to help you. Please contact us for a convenient appointment: (02) 9398 9398.

Pin It on Pinterest

Share This