Why Are Teeth Sensitive After Filling?

If you have recently had a dental filling, you may have noticed that your teeth feel more sensitive than usual. This sensitivity can be deeply uncomfortable—and may even cause pain or discomfort whenever eating or drinking hot or cold foods.

But why does this happen? Let us explore the reasons behind tooth sensitivity after a filling and provide valuable information on managing and alleviating this sensitivity.

Why do we have tooth fillings?

To understand why teeth can become sensitive after a filling, it’s essential first to know why we need fillings in the first place. Tooth fillings are a standard dental procedure used to treat cavities or areas of decay in the teeth.

During the filling process, the dentist methodically eliminates the decayed portion of one’s tooth, filling it with dental material. For example, amalgam or composite resin is used to restore its structure and function.

While the fillings are essential for preserving the tooth’s integrity and preventing further decay, they can sometimes result in tooth sensitivity. This sensitivity is often temporary and should subside over time. However, it’s imperative to understand the causes and potential treatments for tooth sensitivity after a filling.

Read ‘Tooth Filling and Types You Should Know’ for a deeper understanding of tooth fillings.

What to expect after a tooth filling?

After getting a dental filling, it’s typical to experience sensitivity or discomfort in the treated tooth. This sensitivity usually results from the dental work performed and the body’s natural response to it.

The tooth may feel tender or sensitive to hot or cold temperatures, pressure, or even air. However, it’s important to note that the severity and duration of sensitivity varies from person to person.

What does tooth sensitivity feel like?

Tooth sensitivity after a filling can manifest in different ways. Some common symptoms include:

• Pain or discomfort whenever biting down or chewing.
• Sensitivity to hot/cold foods and beverages.
• Temporary, sharp pain that subsides quickly.
• Discomfort when brushing or flossing around the filled tooth.
• Sensitivity in the surrounding teeth.

If you’re experiencing any of these symptoms, it’s important to understand the potential causes and seek appropriate treatment if necessary.

Causes of sensitivity after filling

Several factors may cause sensitivity after filling, for example,

An irritated nerve

During the filling process, the tooth’s nerve may become irritated due to the proximity of the decay or trauma. This irritation can lead to heightened sensitivity, especially when exposed to temperature changes or pressure.

Incorrect bite alignment (Malocclusion)

Sometimes, a filling may alter the bite alignment of the teeth, causing the filled tooth to come into contact with opposing teeth differently than before.

This change in bite alignment can lead to increased pressure on the filled tooth, resulting in sensitivity or discomfort. Your dentist can adjust the filling to improve the alignment and alleviate the sensitivity.

Pulpitis

Pulpitis is inflammation of the dental pulp. The dental pulp is the inner component of the tooth that constitutes nerves and blood vessels. If the decay or damage to the tooth was extensive, it may have reached the dental pulp, causing inflammation and sensitivity.

In such instances, a root canal treatment may be recommended to remove the inflamed pulp and alleviate the sensitivity.

The type of filling

The material used for the filling can also contribute to tooth sensitivity. For example, composite resin fillings may shrink slightly after placement, creating small gaps or spaces between the filling and the tooth.

These gaps can allow sensitivity triggers like hot or cold substances to reach the tooth’s nerve, causing sensitivity. Your dentist can evaluate the filling and recommend appropriate measures to address the sensitivity.

Allergic reaction

In rare instances, individuals may experience an allergic reaction to the materials employed during the filling. For instance, amalgam or composite resin, can manifest as increased tooth sensitivity —along with other symptoms like rashes or itching.

If one suspects an allergic reaction, consult a dentist, who may replace the filling with a different material.

Galvanic shock

Galvanic shock is a rare occurrence that occurs when two adjacent fillings made of different metals (such as gold and amalgam) come into contact, creating an electric current. This can result in sensitivity or discomfort in the affected teeth.

If you experience galvanic shock, your dentist can replace the fillings with compatible materials to alleviate the sensitivity.

Treatment for sensitive teeth post-filling:

If you’re experiencing tooth sensitivity after a filling, there are treatment options are available to help alleviate the discomfort. The appropriate treatment typically depends on the underlying cause of the sensitivity. Here are some common treatment approaches:

• Desensitising toothpaste: Using toothpaste specifically designed for sensitive teeth may help reduce sensitivity and discomfort. These toothpastes typically contain ingredients that block the transmission of pain signals from one’s tooth’s nerve.
• Fluoride treatment: Your dentist may strongly recommend a fluoride treatment to strengthen the enamel and counter sensitivity. Fluoride can also remineralise the tooth, making it less susceptible to sensitivity triggers.
• Dental bonding: If the sensitivity is because of an exposed root surface, your dentist may apply a bonding material to cover and protect the exposed area, reducing sensitivity.
• Bite adjustment: If an improper bite alignment is the cause of the sensitivity, your dentist may reshape the filling or modify your bite to release pressure on the filled tooth.
• Root canal treatment: In cases where the sensitivity is due to extensive damage or inflammation of the dental pulp, your dentist might recommend a root canal procedure to remove the affected pulp and alleviate the sensitivity.

It’s important to consult with your dentist to determine the best course of treatment for your specific situation.

Home remedies for sensitive teeth after fillings

In addition to professional treatments, there are some things you can do at home that may help alleviate tooth sensitivity after a filling. Here are a few tips:

• Avoid extreme temperatures: Limit your consumption of hot or cold beverages and foods. This is because they may trigger sensitivity. Opt for lukewarm or room-temperature options instead. Yup, no ice cream for a while.
• Use a soft-bristledtoothbrush: Brushing gently with a soft-bristled toothbrush may help prevent further irritation to the sensitive tooth.
• Practice good oral hygiene: Maintaining a consistent oral hygiene routine is recommended. This may include diligently brushing twice a day and flossing daily. Such practices keep your teeth and gums healthy and reduce sensitivity.
• Rinse with saltwater: Rinsing one’s mouth with a warm saltwater solution may reduce inflammation and alleviate sensitivity.
• Avoid acidic foods and drinks: Acidic substances may erode the tooth enamel and worsen sensitivity. So, limit your consumption of acidic foods and drinks, such as citrus fruits and sodas.

It’s important to note that home remedies may provide temporary relief. However, they are not a substitute for professional dental care. If your sensitivity persists or worsens, consult your dentist for further evaluation and treatment.

How long does tooth sensitivity last after filling?

The duration of tooth sensitivity after a filling can vary from person to person and depends on the underlying cause. In most cases, sensitivity should improve within a few days to a couple of weeks as the tooth adjusts to the filling.

What are the signs that I might need to revisit my dentist after a filling?

While it’s normal to experience some sensitivity after a filling, certain signs may indicate the need for further evaluation by your dentist. These signs include

• Persistent or worsening sensitivity that lasts longer than a few weeks.
• Pain that is excruciating or severe and not relieved by over-the-counter painkillers.
• Swelling or inflammation around the filled tooth.
• Signs of infection, like fever or discharge.
• Changes in bite alignment or difficulty chewing.

If you experience any of these signs or symptoms, scheduling an appointment with a reputable dental facility such as mydentist® as soon as possible is important for proper evaluation and treatment.

FAQ

Should I avoid certain foods or drinks after getting a filling?

It’s advisable to avoid extremely hot, cold, or acidic foods or drinks immediately after getting a filling, as they can exacerbate sensitivity. Stick to soft, lukewarm foods and beverages until any discomfort subsides.

Is tooth sensitivity after a filling a sign of an infection?

Tooth sensitivity after a filling is not always a sign of infection. However, if the sensitivity persists or worsens over time, or if you experience other signs of infection, such as swelling or discharge, it’s important to consult your dentist for further evaluation.

Can brushing techniques affect sensitivity after a filling?

Yes, aggressive brushing techniques can irritate the tooth and exacerbate sensitivity. Utilise a soft-bristled toothbrush and gentle, circular motions when brushing to minimise irritation.

Can old fillings cause renewed sensitivity?

Over time, dental fillings may degrade or become dislodged, leading to renewed sensitivity or decay around the filling. If you experience sensitivity around an old filling, consult your dentist for an assessment and potential replacement.

Will using a straw help avoid sensitivity after a dental filling?

Using a straw may help minimise contact between the sensitive tooth and hot or cold liquids, reducing sensitivity. However, it’s important to remember that using a straw is not a substitute for proper dental care and treatment.

Is it safe to use teeth whitening products if I have sensitivity after a filling?

It’s best to avoid teeth whitening products until any sensitivity resolves, as they can exacerbate discomfort. Consult your dentist for advice on safe teeth whitening treatments for sensitive teeth.

Can stress or other health conditions worsen sensitivity after a filling?

Stress and certain health conditions can potentially worsen tooth sensitivity. Stress can contribute to tooth grinding or clenching, which can worsen sensitivity.

Additionally, certain health conditions, such as acid reflux or autoimmune disorders, may affect oral health and contribute to sensitivity. It’s important to manage stress and maintain overall health to minimise the impact on tooth sensitivity.

Conclusion

Generally, experiencing sensitivity after a dental filling is a common occurrence. However, understanding the underlying causes and seeking appropriate treatment may help alleviate discomfort and promote healing.

So, remember to follow your dentist’s recommendations for post-filling care and reach out if you have any concerns or persistent symptoms. With proper care and attention, one can enjoy a healthy, pain-free smile for decades.