Can Misaligned Bite Cause Gum Swelling? Dental Issues - Dentistry

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What are the causes of gum swelling?


Hello, doctor.
I have issues with teeth grinding and temporomandibular joint (TMJ) dysfunction.
Recently, due to increased work stress, I have been experiencing discomfort in my TMJ and pain in the occlusion of my upper left molars.
After an examination, my dentist concluded that it was caused by gum issues and malocclusion.
After a dental cleaning and adjustment of my bite, there was some improvement.
However, the gums between two molars remain swollen and have not subsided after the cleaning.
Can malocclusion cause gum swelling? Thank you.

Jimmy, 40~49 year old female. Ask Date: 2021/06/28

Dr. Lin Jiayong reply Dentistry


Hello: Gum swelling is usually due to gingival inflammation, which can have various causes.
Common causes include bacterial infections resulting from periodontal disease or pulpitis.
Malocclusion leading to tooth injury is also a possibility.
It is advisable to consult a physician to identify the underlying cause for appropriate treatment.
Sincerely, Dr.
Lin Chia-Yung, Department of Dentistry, Taichung Hospital, Ministry of Health and Welfare.

Reply Date: 2021/06/28

More Info


Misaligned bites, also known as malocclusion, can indeed contribute to various dental issues, including gum swelling. When the teeth do not align properly during biting or chewing, it can create uneven pressure on the gums and teeth, leading to inflammation and discomfort. This misalignment can cause certain areas of the gums to become irritated, swollen, or even infected, particularly if there are areas where food particles can become trapped or if the gums are subjected to excessive force.

In your case, the discomfort in your left upper molar and the subsequent swelling of the gums between your molars could be a result of several factors related to your bite alignment. When your teeth do not fit together properly, it can lead to increased stress on certain teeth and their supporting structures, including the gums. This stress can exacerbate any existing gum issues, leading to inflammation. Additionally, if your bite is causing you to clench or grind your teeth (a condition known as bruxism), this can further irritate the gums and lead to swelling.

After your dental cleaning and bite adjustment, it is not uncommon for some residual swelling to occur as your gums adjust to the new bite alignment. However, if the swelling persists, it may indicate an underlying issue that needs to be addressed. Here are a few considerations and recommendations:
1. Gum Health: Ensure that you maintain good oral hygiene practices, including brushing twice a day with a soft-bristled toothbrush and flossing daily. This will help reduce plaque buildup and keep your gums healthy.

2. Follow-Up with Your Dentist: Since you have already seen a dentist for your bite adjustment, it is essential to follow up if the swelling does not subside. Your dentist may want to examine the area more closely to rule out any infections or other issues that may be contributing to the swelling.

3. Consider Orthodontic Evaluation: If misalignment is a significant concern, consulting with an orthodontist may be beneficial. They can assess your bite and recommend treatments that may help align your teeth properly, potentially alleviating the pressure on your gums.

4. Manage Stress: Since you mentioned that work stress has increased, consider stress management techniques such as mindfulness, meditation, or physical exercise. Reducing stress can help decrease the tendency to clench or grind your teeth, which can contribute to gum issues.

5. Dietary Considerations: Be mindful of your diet, as certain foods can exacerbate gum inflammation. Avoiding overly sugary or acidic foods can help maintain gum health.

6. Use of Mouthguards: If you are experiencing bruxism or clenching, a custom-fitted mouthguard may help protect your teeth and reduce stress on your gums.

In summary, misaligned bites can indeed lead to gum swelling due to the uneven pressure they create on the gums and teeth. It is crucial to maintain good oral hygiene, follow up with your dentist, and consider orthodontic evaluation if necessary. Addressing these issues promptly can help prevent further complications and promote better oral health.

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