Getting a dental filling is a common way to fix a cavity and protect your tooth. But sometimes, after the procedure, your tooth might feel a little sensitive or even ache. It's important to understand why this happens and what you can do about it. Let's explore the common reasons behind post-filling discomfort and how to manage it.
Understanding the Procedure
A dental filling is a type of restoration dentistry that repairs a tooth damaged by decay. Your dentist removes the decayed portion and replaces it with a material like composite resin or amalgam. This seals the tooth, preventing further damage and restoring its function. The process can sometimes irritate the tooth, leading to temporary discomfort.
Common Reasons for Post-Filling Sensitivity
Several factors can contribute to tooth sensitivity after a filling. One common reason is inflammation of the dental pulp. The pulp is the soft tissue inside your tooth containing nerves and blood vessels. When the dentist cleans out the cavity, it can sometimes irritate the pulp, causing it to become inflamed. This inflammation can lead to sensitivity to hot, cold, or pressure.
Another possibility is bite sensitivity. After a filling, the new restoration might slightly alter your bite. If the filling is too high, it can put extra pressure on the tooth when you bite down, causing discomfort. This usually resolves itself as you naturally wear down the filling slightly, or your dentist can adjust it.
Galvanic shock is another less common cause of sensitivity. This occurs when different metals in your mouth (like a new amalgam filling and an old gold crown) create a tiny electrical current. This current can stimulate the nerves in your tooth, causing a brief, sharp pain.
Finally, dentin sensitivity can play a role. Dentin is the layer of tooth structure underneath the enamel. During the filling process, the dentin can become exposed, making the tooth more sensitive to stimuli.
What Can You Do?
Fortunately, post-filling sensitivity is usually temporary. Here are some steps you can take to manage the discomfort:
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Maintain excellent oral care: Brush gently with a soft-bristled toothbrush and floss daily. Avoid using whitening toothpastes during this sensitive period.
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Avoid extreme temperatures: Steer clear of very hot or cold foods and drinks that can trigger sensitivity.
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Over-the-counter pain relievers: Medications like ibuprofen or acetaminophen can help alleviate pain and reduce inflammation.
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Use desensitizing toothpaste: These toothpastes contain ingredients that block nerve signals and reduce sensitivity.
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Avoid hard or sticky foods: These can put extra pressure on the filled tooth and exacerbate sensitivity.
When to See Your Dentist
While mild sensitivity is normal, it's important to contact your dentist if you experience:
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Severe or persistent pain that doesn't improve with over-the-counter pain relievers.
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Sensitivity that lasts longer than a few weeks.
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Swelling or redness around the filled tooth.
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Pain when biting down that doesn't improve.
Your dentist can evaluate your tooth and determine if any further treatment is necessary. They may adjust the filling, recommend a different type of toothpaste, or explore other options to alleviate your discomfort.
Dentist San Francisco CA • About San Francisco Dental Arts Discover exceptional dental care at San Francisco Dental Arts. Providing excellent, personalized care to make your visits as comfortable and pleasant as possible! San Francisco Dental Arts, 220 Montgomery St Ste. 825, San Francisco, CA 94104 • 415-854-9396 • thesfdentist.com • 11/17/2025 • Related Phrases: dentist San Francisco CA •
Getting a dental filling is a common way to fix a cavity and protect your tooth. But sometimes, after the procedure, your tooth might feel a little sensitive or even ache. It's important to understand why this happens and what you can do about it. Let's explore the common reasons behind post-filling discomfort and how to manage it.
