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Causes of Bad Breath

Posted on 3/20/2023 by Dr. Shaun Rai
Causes of Bad BreathWhen food breaks down in and around your teeth, they cause bacteria to grow, making terrible breath in your mouth. Certain foods, including onions, garlic, and spices, can also contribute to bad breath. After digestion, these meals enter the bloodstream, are transported to the lungs, and affect breathing. Here are some other causes of bad breath.

Cigarette products

When you smoke cigarettes, your mouth smells bad. Also, people who smoke and chew tobacco are more likely to have gum disease, another cause of poor breath. Food will remain in your mouth and cause foul breath if you do not wash and floss your teeth frequently. Plaque is a sticky film of germs that builds up on the teeth. If you do not brush the plaque away, it can irritate your gums and cause pockets between your teeth and gums. Additionally, your tongue might harbor microorganisms that cause odors. Dentures that are not cleaned regularly or that do not fit properly might retain bacteria and food particles that result in a bad odor.

A dry mouth

Ideally, the mouth is cleansed by saliva, removing particles that generate foul odors. A dry mouth, also known as xerostomia, can lead to bad breath due to decreased saliva production. The natural occurrence of dry mouth during sleep, which causes "morning breath," is exacerbated by sleeping with an open mouth. Chronic dry mouth can be brought on by a problem with the salivary glands or certain disorders.


Some drugs could cause dry mouth, which could lead to bad breath. The body may break down some medicines into substances breathed out as a foul smell. Following oral surgery, such as tooth extraction, surgical wounds may result in mouth sores, tooth decay, gum disease, and foul breath.

Other problems of the mouth, nose, and throat

Sometimes, foul breath is caused by tiny stones that develop in the tonsils and are covered in odor-producing microbes. Infections or lingering inflammation in the nose, sinuses, or throat can produce bad breath and postnasal drip. For bad breath checkups and medication, contact our offices today.

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Shaun B. Rai DMD has created this informative blog to help educate the community. Please read below and then call us today!
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