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Does Tooth Decay Cause Bad Breath?


Bad breath can be caused by bacteria that live in our teeth and gums. In places where brushing your teeth won’t get rid of them, bacteria in the mouth might hide. If you have tooth decay, you are more prone to experience halitosis.

Tooth Decay and Bad Breath

When a tooth becomes decayed, it can cause dental plaque to build up and the pulp to get infected. Pulp death may result if that takes place. The dental pulp can smell bad if it is dead. Halitosis has other causes besides tooth decay. Additional factors include:

Poor oral hygiene

Poor oral hygiene is the main contributor to foul breath. Bacteria can quickly accumulate in your mouth, including on your tongue and gums, if you don’t wash your teeth thoroughly. Tooth decay, which also results in bad breath, is brought on by bacteria, which also produces odour-producing gases.

If you don’t floss and brush your teeth after every meal, germs will devour any food that gets stuck between your teeth and could release obnoxious fumes.

You must wipe your tongue to manage halitosis because germs might reside there. You should get frequent dental check-ups to make sure tooth rot is treated as soon as possible. How frequently you need to come in for dental work will be specified by your dentist.


Your breath may smell bad if you consume certain foods or consume certain drinks. Alcohol and coffee both contribute to bad breath. Fortunately, many causes of bad breath only last a short time. By avoiding certain meals and beverages, as well as cleaning your teeth or rinsing your mouth right away afterward, you can prevent it.


Crash dieting and fasting are additional potential causes of foul breath. This is particularly valid if you are on a low-carbohydrate diet. Extreme dieting stimulates the breakdown of fat in your body. It results in the production of ketones, which might give you unpleasant breath.


In addition to contributing to lung cancer, smoking also gives you terrible breath. Another factor contributing to foul breath is gum disease, which can be spread by this unhealthy behaviour. Quit smoking to reduce your chances of gum disease and to stop having foul breath.


Halitosis may result from some drugs. One such is nitrate medication, which is used to treat angina and chest pain. Your breath may smell bad if you’re taking some tranquillizers or chemotherapy medications. If the medication you’re taking is the root of your halitosis, your doctor might suggest a different option. However, you must always talk to your doctor before stopping any medicine.

How can your dentist help?

You must start keeping your mouth clean if you have bad breath. Visit your dentist frequently so that he can clean the places that are challenging for tooth brushing to reach.

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