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Have you ever woken up and noticed that one side of your face is much puffier than the other? Facial swelling, especially when it's confined to one side of your face or cheek, can be alarming—especially when it's also painful or tender, or you're having difficulty chewing. While swelling may be the consequence of something as simple as sleeping in an awkward position or a minor injury, dental issues are usually the cause. 

At Bathurst Western Dental, we regularly encounter patients who present with facial swelling due to treatable oral health issues. In this post, we'll discuss the most common dental causes of facial swelling, when you should visit a dentist, and how to avoid this painful symptom in the future. 

1. Dental Abscess: The Most Common Culprit 

A dental abscess is one of the most frequent causes of sudden swelling on one side of the face. It is a pocket of pus caused by a bacterial infection, which usually happens at the root of a tooth or between the gum and the tooth. 

Symptoms of a Dental Abscess Include: 

If not treated, a dental abscess can infect surrounding tissue, causing facial swelling and even life-threatening health complications if the infection travels to the bloodstream. 

What to do: 

Seek emergency dental care. At Bathurst Western Dental, we can drain the abscess, treat the infection with antibiotics, and determine whether the tooth can be saved with a root canal or needs to be extracted. 

2. Impacted Wisdom Teeth 

One of the most common reasons for unilateral facial swelling is impacted wisdom teeth. When your wisdom tooth doesn't come in completely through the gum or comes in at an odd angle, it will cause: 

The swelling typically occurs on one side where the tooth is trying to erupt and can worsen with infection or inflammation. 

What to do: 

 Visit your dentist to confirm if your wisdom tooth is impacted. We’ll take an X-ray to assess the situation and may recommend wisdom tooth extraction if necessary. 

3. Gum Disease or Periodontal Infection 

Mild gum inflammation (gingivitis) can sometimes turn into periodontal disease, which infects below the gum line. In a few cases, this will cause localized swelling, especially if an infected gum pocket is present on one side of your mouth. 

Symptoms of Gum Infection: 

What to do: 

Professional cleaning or scaling of the teeth may be necessary to remove bacteria and tartar buildup. For advanced infections, deep cleaning (scaling and root planning) or gum treatment may be necessary. 

4. Tooth Fracture or Injury 

Did you recently bite something hard or have trauma to the face or jaw? A cracked or broken tooth may be swollen and painful if the pulp (nerve) inside the tooth is exposed or infected. 

Symptoms: 

What to do: 

Don't ignore a cracked tooth—seek dental care right away. We may be able to save the tooth with a dental crown, root canal, or another restoration. 

5. Sinus Infection (That Mimics a Toothache) 

Believe it or not, sinus infections can also mimic tooth or dental pain and cause facial swelling, particularly around the upper jaw or under the eyes. 

Symptoms that may be sinus-related: 

What to do: 

If your symptoms are similar to a sinus infection, your dentist may refer you to your family doctor. However, if you're uncertain whether the swelling is tooth- or sinus-related, it's safer to get a dental examination to rule out oral infection. 

6. Swollen Salivary Glands 

Blockage or infection in the salivary glands—especially in the jaw area—can result in localized swelling. This may be caused by dehydration, poor oral hygiene, or bacterial infection. 

Symptoms: 

What to do: 

Dentists may diagnose the swollen area and refer for antibiotics or minor surgical drainage if there is a blockage. 

7. Post-Dental Procedure Swelling 

If you’ve recently had a root canal, extraction, or implant surgery, mild swelling on one side of the face is common and usually temporary. 

Tips to manage it: 

If you notice the swelling worsening after a few days, it may indicate an infection—please contact your dentist promptly. 

When to See a Dentist Immediately 

Face swelling, especially if it is accompanied by fever or pain, should never be ignored. You require immediate dental care if: 

How Bathurst Western Dental Can Help 

At Bathurst Western Dental, we offer: 

Preventing Future Facial swelling 

While some of the reasons for swelling are unexpected, a lot of them can be prevented by excellent oral hygiene and regular checkups. 

Prevention Tips: 

Final Thoughts 

A swollen cheek or jaw may not seem serious at first, but it can be an indication of a serious dental issue that requires professional intervention. Therefore, the earlier you detect an abscess, impacted tooth, or gum infection, the lower the likelihood of complications. 

If you are experiencing one-sided facial swelling or any other abnormal mouth symptom, don't wait. Please consider scheduling an appointment at Bathurst Western Dental today. We're here to diagnose the issue, effectively treat it, and get you smiling again.