These things will ensure that your teeth stay healthy, clean, and properly maintained to stop bad breath. If your bad breath is caused by certain oral, nasal or throat condition, then have it cured immediately. Usually, once any of these conditions are treated, the bad breath goes with it. Kidney failure, lung liver failure, lung infection, gastroesophageal reflux disease and hiatal hernia are major diseases that may not come away in days, or worse, would require a series of medical treatments. Additionally, once the mouth area is deprived of the necessary circulation of oxygen, the pH level is likely to be altered, thus creating an effect of producing an environment that is conducive for the increase of anaerobic bacteria. Even with hosts of products that offer effective means for combating xerostomia or mouth drying, there is still too few that live up to their claims. And our noses by nature, have the tendency to filter out the background odors. Thus, we cannot readily discern if our breath smells bad already. But so much for that, you must also be aware of the conditions that cause the breath to acquire its unpleasant odor. While there may be a high variability in terms of causes, they still all boil down towards the oral bacteria that thrive inside our mouths. VSCs cause bad breath. And dry mouth is caused by several things, usually, avoidable ones. Sinus infection, allergies and recurrent colds lead to post-nasal drip. This forces your child to use his mouth in breathing which will cause the mouth to dry easily. Another cause of xerostomia is blanket sucking. Mouth breathing or xerostomia promotes the optimized environment for anaerobic bacteria due to the factor that it encourages the drying of the mouth. With relative dryness, these anaerobic bacteria would be able to reproduce more due to the absence of oxygen. This is further illustrated with morning breath. This is the most basic thing you can do clean your teeth and remove that foul odor off your mouth, and it is effective too. Doctors recommend that you brush your teeth for at least 2 times a day with toothpaste with fluoride for a minimum of two minutes. Using commercial toothpastes is okay if you are having bad breath attack after you eat your lunch but they may provide a temporary relief if you have more severe case of bad breath.