Bad breath, also called halitosis, is common and can happen for many reasons. Sometimes the cause is temporary, such as a strongly flavored meal. Persistent bad breath, however, may be related to oral hygiene, plaque buildup, gum disease, cavities, dry mouth, tobacco use or another health issue.
The best way to address ongoing bad breath is to identify the underlying cause rather than simply masking the odor with mints or mouthwash.
This guide explains some of the most common causes of bad breath, what you can do at home and when it may be time to schedule a dental evaluation.
What Causes Bad Breath?
Bad breath can come from several different sources. Common causes include:
- Plaque and food debris around the teeth and gums
- Inadequate brushing or cleaning between the teeth
- Bacteria and debris on the tongue
- Tooth decay or damaged dental restorations
- Gingivitis or periodontal disease
- Dry mouth
- Tobacco use
- Certain foods and beverages
- Some medical conditions or medications
If bad breath persists despite good oral hygiene, an evaluation can help determine whether the source appears to be dental or whether further medical evaluation may be appropriate.
Poor Oral Hygiene and Plaque Buildup
One of the most common contributors to bad breath is plaque and food debris left around the teeth and gums.
Bacteria in the mouth break down food particles and other material, which can produce unpleasant odors. Brushing twice a day and cleaning between the teeth every day can help reduce this buildup.
Once plaque hardens into tartar, it generally cannot be removed with normal brushing and flossing alone. Professional dental cleaning may then be needed.
For everyday home-care guidance, read our oral hygiene guide.
Don’t Forget to Clean Your Tongue
The surface of the tongue can collect bacteria, food debris and dead cells. For some people, this buildup contributes to unpleasant breath.
Gently cleaning your tongue as part of your daily oral-hygiene routine may help. You can use a toothbrush or a tongue-cleaning tool if it is comfortable for you.
Avoid aggressive scraping that causes soreness or bleeding.
Can Gum Disease Cause Bad Breath?
Yes. Persistent bad breath can sometimes be associated with gingivitis or periodontal disease.
When plaque and tartar accumulate around and below the gumline, the gums may become inflamed. Deeper periodontal pockets can also collect bacteria and debris that are difficult to remove with routine home care.
Other signs that should be evaluated include bleeding gums, gum recession, swelling, tenderness or loose teeth.
If periodontal disease is present, a routine preventive cleaning may not be enough. Learn more about basic cleaning vs. deep cleaning and dental deep cleaning in Sugar Land.
Cavities and Dental Problems Can Contribute to Bad Breath
Tooth decay, damaged fillings and areas where food repeatedly becomes trapped may also contribute to unpleasant breath.
These problems cannot be corrected simply by using mouthwash. The underlying dental condition needs to be identified and treated appropriately.
A dental examination can help determine whether decay, a broken restoration or another dental problem is contributing to the odor.
Dry Mouth and Bad Breath
Saliva helps wash away food debris and supports the natural balance of the mouth. When saliva production is reduced, odor-producing bacteria and debris may remain in the mouth longer.
Dry mouth can have many causes, including dehydration, certain medications and some medical conditions.
Helpful measures may include drinking water regularly and, when appropriate, using sugar-free gum to encourage saliva production.
If you frequently experience dry mouth, talk with your dentist or physician. Do not stop or change a prescription medication without discussing it with the healthcare professional who prescribed it.
Smoking, Tobacco and Bad Breath
Smoking and other forms of tobacco use can contribute to persistent mouth odor. Tobacco use can also affect gum health, healing and the health of oral tissues.
If you use tobacco, regular dental examinations are particularly important so changes involving the teeth, gums and other areas of the mouth can be evaluated.
Can Food Cause Bad Breath?
Yes. Certain foods and beverages can temporarily affect the way your breath smells. Examples may include garlic, onions and some strongly flavored foods.
This type of bad breath is usually temporary and is different from persistent halitosis caused by an underlying dental or medical problem.
A balanced diet and consistent oral hygiene can help support a healthier mouth. You can learn more in our guide to how diet and habits affect your teeth and smile.
What Can You Do at Home for Bad Breath?
For bad breath related to everyday plaque and food buildup, a consistent oral-care routine may help:
- Brush your teeth twice a day with fluoride toothpaste.
- Clean between your teeth every day.
- Gently clean your tongue.
- Drink water regularly.
- Avoid tobacco.
- Keep up with dental examinations and professional cleanings.
Mints and mouth rinses may temporarily improve breath, but they do not correct conditions such as tooth decay, gum disease or persistent dry mouth.
When Should You See a Dentist About Bad Breath?
Consider scheduling a dental evaluation if bad breath persists despite consistent brushing, cleaning between your teeth and tongue cleaning.
You should also have an evaluation if bad breath occurs along with:
- Bleeding or swollen gums
- Tooth pain or sensitivity
- Loose teeth
- Persistent dry mouth
- A broken tooth or filling
- A persistent unusual taste in the mouth
If a dental cause is not found, your dentist may recommend discussing persistent symptoms with your physician or another healthcare professional.
Can a Professional Dental Cleaning Help Bad Breath?
If plaque and tartar buildup are contributing to bad breath, professional cleaning may help by removing deposits that cannot be removed effectively at home.
However, treatment depends on the underlying cause. Patients with periodontal disease may require deeper treatment rather than a routine cleaning.
Learn more about dental exams and cleanings in Sugar Land.
Concerned About Persistent Bad Breath?
Dr. Sneha Xavier can evaluate your teeth, gums and oral tissues to look for dental conditions that may be contributing to persistent bad breath and discuss appropriate next steps.
Texan Smile Family & Cosmetic Dentistry is located at 4821 LJ Parkway, Suite 30, Sugar Land, TX 77479.
Schedule an appointment online or contact Texan Smile with questions.
Reviewed by Dr. Sneha Xavier, DMD – Family & Cosmetic Dentist in Sugar Land, TX.
Dental Disclaimer: This article is intended for educational purposes only and does not replace professional dental or medical advice, diagnosis or treatment. Persistent bad breath can have dental and non-dental causes. Treatment recommendations vary depending on the underlying condition. Please consult a dentist or other qualified healthcare professional for symptoms that persist or concern you.