Foul Breath: Causes and Solutions for Dental Issues

Foul-smelling blood in the mouth?

Hello Doctor, I have a question.
Sometimes when I go without eating or drinking for a while, I notice that my mouth is either closed or open while breathing, and there is a certain odor, sometimes with a fishy smell.
I initially thought it might be blood, but there was none.
I saw a doctor last week, and there were no issues.
I looked online and found that bacteria can produce a similar odor, particularly in cases of sinusitis.
However, online sources only mention bad breath as a result of bacteria (I’m not sure what that smell is).
I also have yellow nasal discharge in the morning.
So, I’m wondering if going without food or water for a while could cause this type of odor that resembles a bloody smell? I hope you can answer my question as it is quite troubling.
Thank you very much!

Eric Wong, 20~29 year old female. Ask Date: 2017/10/10

Dr. Zhu Guanyu reply Dentistry

Hello,
The sources of oral malodor primarily originate from the oral cavity, followed by the nasal cavity and gastrointestinal tract.
It is recommended that you visit a dental clinic or hospital dental department for further examination.
Thank you for your message! Wishing you safety and health.
Sincerely,
Dr.
Cheng Jue-Yi
Director, Department of Dentistry
Taoyuan Hospital, Ministry of Health and Welfare

Reply Date: 2017/10/10

More Info

Hello! Thank you for your question regarding foul breath and its potential causes related to dental issues. Bad breath, or halitosis, can be a complex problem with various underlying causes, and it’s understandable that you’re feeling concerned about the symptoms you’re experiencing.

Understanding Foul Breath
1. Bacterial Growth: The mouth is home to a multitude of bacteria, some of which can produce sulfur compounds that lead to unpleasant odors. When you don’t eat or drink for an extended period, saliva production decreases. Saliva is essential for washing away food particles and bacteria. A dry mouth can lead to an increase in bacterial growth, resulting in bad breath.

2. Oral Hygiene: Poor oral hygiene is one of the most common causes of bad breath. If plaque and food particles are not adequately removed through brushing and flossing, they can lead to the growth of bacteria that produce foul-smelling compounds. It’s crucial to maintain a thorough oral hygiene routine, including brushing your teeth at least twice a day and flossing daily.

3. Dental Issues: Conditions such as gum disease (gingivitis or periodontitis), tooth decay, or abscesses can contribute to bad breath. In your case, if you have existing dental issues, such as cavities or gum problems, these could be sources of bacteria that produce foul odors.

4. Sinus Issues: You mentioned having yellow nasal discharge, which could indicate sinusitis or another sinus-related issue. Infections in the sinuses can lead to post-nasal drip, where mucus drips down the back of the throat, potentially causing bad breath. The bacteria in the mucus can also contribute to an unpleasant smell.

5. Diet and Dehydration: Certain foods, such as garlic and onions, are notorious for causing bad breath. Additionally, dehydration can lead to a dry mouth, exacerbating the problem. If you’re not consuming enough fluids, this could be a contributing factor.

6. Medical Conditions: Some systemic conditions, such as diabetes, liver disease, or kidney problems, can also lead to distinctive odors in the breath. If you have any underlying health issues, it’s essential to discuss these with your healthcare provider.

Solutions and Recommendations
1. Improve Oral Hygiene: Ensure you brush your teeth twice a day with fluoride toothpaste and floss daily. Consider using an antibacterial mouthwash to help reduce bacteria in your mouth.

2. Stay Hydrated: Drink plenty of water throughout the day to keep your mouth moist and help wash away food particles and bacteria.

3. Regular Dental Check-ups: Schedule regular visits to your dentist for check-ups and cleanings. This will help identify and treat any dental issues that may be contributing to bad breath.

4. Address Sinus Issues: If you suspect that your sinus problems are contributing to your bad breath, consider consulting an ENT specialist. They can evaluate your sinus health and recommend appropriate treatments.

5. Dietary Adjustments: Be mindful of your diet. Reducing the intake of strong-smelling foods and ensuring you eat regular meals can help manage breath odor.

6. Chewing Gum: Sugar-free gum can stimulate saliva production, which helps wash away bacteria and food particles.

7. Consult a Healthcare Professional: If your symptoms persist despite good oral hygiene and hydration, it may be beneficial to consult with a healthcare professional to rule out any underlying medical conditions.

In conclusion, foul breath can stem from various causes, including poor oral hygiene, dental issues, sinus problems, and dietary factors. By improving your oral care routine, staying hydrated, and seeking professional advice when necessary, you can effectively manage and reduce bad breath. If you have any further questions or concerns, please feel free to ask!

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