Bad Odor Between Teeth: Causes and Solutions

Bad odor between teeth?

On May 25th, I visited the dentist because I had a cavity in the upper right third molar, which was causing discomfort as food would get stuck and touch the gums while eating.
The dentist diagnosed me with a cavity in the third molar and performed a filling.
After the filling, there were no issues with the tooth itself, but I experienced swelling and pain in the gums when using dental floss between the third and second molars.
The third molar had not caused any pain at all.
On May 31st, after a week of ongoing gum issues, I returned to the dentist for a check-up.
An X-ray was taken, and the dentist indicated that there were no significant problems, suggesting that it was likely gum inflammation.
The dentist also pointed out that I was using dental floss incorrectly and provided education on proper flossing techniques, after which I was advised to observe the situation at home.
On June 2nd, I noticed a foul odor coming from the gap between the third and second molars, which had been present for about two weeks prior to discovering the cavity.
I purchased mouthwash for cleaning, and the odor disappeared until two weeks before I found the cavity.
After the filling, there was no foul odor for a week, but starting today, June 2nd, the odor has returned, although it is milder than before.
I have been using the flossing technique taught by the dentist on May 31st and have continued using mouthwash, but the odor persists.
My question is: Does the foul odor from this gap indicate that there is a problem with the filled tooth, or will the odor disappear with continued proper cleaning?

Miss Pan, 20~29 year old female. Ask Date: 2021/06/02

Dr. Zeng Guanghui reply Dentistry

If cavities have been filled, and proper dental flossing and mouthwash are being used, but there is still bad breath, it is important to consider other potential issues beyond the oral cavity, such as post-nasal drip or gastroesophageal reflux disease (GERD) and other digestive system problems.
Dr.
Tseng Guang-Hui, Department of Dentistry, Nantou Hospital.

Reply Date: 2021/06/02

More Info

Understanding bad odor between teeth can be a common concern, especially after dental procedures like fillings. The presence of bad odor, particularly in the spaces between teeth, can be attributed to several factors, including food particles trapped in the gum line, plaque buildup, or even gum disease. In your case, it seems that the odor has re-emerged after a brief absence following your dental filling, which raises a few questions about the underlying causes and potential solutions.

Firstly, it’s important to recognize that the odor you are experiencing may not necessarily indicate a problem with the filling itself. Dental fillings are designed to restore the function and integrity of a tooth that has been compromised by decay. However, if food particles or plaque are accumulating in the space between your second and third molars, this can lead to an unpleasant smell, even if the filling is intact. The fact that you have experienced this odor intermittently suggests that it may be related to your oral hygiene practices rather than an issue with the dental work.

To address the odor, it is crucial to ensure that you are effectively cleaning the area between your teeth. Here are some recommendations:
1. Proper Flossing Technique: As your dentist pointed out, using dental floss correctly is vital. Make sure to gently slide the floss between your teeth and curve it around the base of each tooth to remove plaque and food particles. Avoid snapping the floss, as this can irritate the gums.

2. Regular Use of Mouthwash: While mouthwash can help reduce odor, it should not replace brushing and flossing. Look for an antibacterial mouthwash that can help kill bacteria that contribute to bad breath.

3. Routine Dental Check-ups: Regular visits to your dentist for cleanings and check-ups are essential. Your dentist can identify any potential issues early on, such as cavities or gum disease, which could be contributing to the odor.

4. Hydration and Diet: Staying hydrated helps maintain saliva production, which is essential for neutralizing acids and washing away food particles. Additionally, be mindful of your diet; sugary and acidic foods can contribute to plaque buildup and bad breath.

5. Consider a Water Flosser: If traditional flossing is challenging, a water flosser can be an effective alternative. It uses a stream of pulsating water to remove food particles and plaque between teeth and along the gum line.

6. Monitor for Other Symptoms: If the odor persists despite good oral hygiene, or if you experience pain, swelling, or bleeding gums, it’s essential to return to your dentist for further evaluation. These could be signs of gum disease or other dental issues that may require treatment.

In summary, while the bad odor between your teeth may not directly indicate a problem with your filling, it is essential to maintain a diligent oral hygiene routine. By ensuring that you are effectively cleaning between your teeth and addressing any potential gum issues, you can help eliminate the odor. If the problem persists, don’t hesitate to consult your dentist for further investigation. Regular dental care is key to maintaining oral health and preventing issues that can lead to discomfort or bad breath.

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