It’s common to feel mild sensitivity right after getting a dental filling, especially when eating or drinking something hot or cold. But if the pain lingers or starts later, it’s worth paying attention. If you’re wondering: why does my tooth filling hurt? The good news is there’s usually a fix! 

At Luna Dental, we understand how frustrating lingering tooth pain can be. That’s why we take a thorough approach to identify the root cause and provide lasting relief — all while keeping your comfort a top priority. Let’s break down what could be going on, what warning signs to watch for, and how to prevent future issues.

Why are Dental Fillings Important?

Dental fillings are essential for maintaining oral health by repairing and restoring decayed or damaged teeth. They help to restore tooth structure and prevent further decay, ensuring your smile remains healthy and functional. At Luna Dental, we tailor the Dental filling material to match your teeth and meet your specific dental needs, enhancing both the durability and aesthetic of your fillings. 

Our team at Luna Dental is dedicated to providing fillings that not only repair but also blend naturally with your teeth, maintaining your smile’s appearance and strength.

Why Does My Tooth Filling Hurt?

There are several possible reasons why your tooth might hurt after getting a filling, whether it’s been a few days, weeks, or even months later:

• High filling – If the filling is slightly too tall, it can put pressure on the tooth when you bite down, causing pain or discomfort.
  
• Tooth sensitivity – Some sensitivity to temperature is common, especially with newer fillings, but it should gradually fade.
  
• Cracked or worn filling – Over time, fillings can crack or shift, exposing sensitive areas of your tooth.
  
• Pulpitis – If the cavity was deep, the inner part of your tooth (the pulp) may become inflamed, leading to lingering pain.
  
• Tooth decay under the filling: If bacteria have slipped in under the filling, it can lead to further decay or even infection.

Warning Signs That Indicate You Need to See Your Dentist

Pain that doesn’t go away is your body’s way of telling you something isn’t right. Here are some signs that it’s time to book an appointment: 

• Sharp or throbbing pain when chewing
  
• Sensitivity to hot, cold, or sweet foods
  
• Pain that starts long after the filling was placed
  
• A filling that feels loose or uneven
  
• Visible cracks or discoloration around the filling
  

These symptoms could point to a deeper problem, like a damaged nerve or decay under the filling. If you’re wondering why your tooth filling hurts, it may be time to get it checked. The earlier your dentist catches it, the easier it is to treat. 

Ways to Prevent Tooth Filling Pain

While not all tooth filling pain is avoidable, there are simple steps you can take to protect your fillings and reduce the risk of future discomfort. Brushing and flossing daily helps prevent new decay around your fillings. 

Avoid chewing on hard objects like ice or pens, which can crack or dislodge your dental work. If you grind your teeth at night, wearing a custom night guard can protect both your natural teeth and any restorations. Regular dental checkups and cleanings are also key, as they allow your dentist to catch small issues before they become painful problems. 

One more tip: skip the whitening toothpaste. These formulas often contain abrasive ingredients that can wear down your enamel and damage composite fillings over time. According to the BMC Oral Health, whitening products should be used with caution, especially on teeth with restorations, as they may not whiten evenly and can lead to increased sensitivity. A better option is a dentist-approved toothpaste that’s gentle, non-abrasive, and fluoride-rich to help strengthen your enamel and protect your fillings.

Expert Filling Care With Your Comfort in Mind

At Luna Dental, we focus on pain prevention just as much as treatment. Our KOIS-trained dentist in NW Calgary is dedicated to providing personalized, comprehensive care using advanced technology. 

Whether it’s a small adjustment or a replacement filling, we’re here to help with trusted, high-tech care that puts your comfort, education, and long-term health first. Book your visit today and let us take care of your smile!