Why Bad Breath Persists Despite Brushing Teeth?

The UK’s National Health Service (NHS) has warned against ignoring persistent bad breath (halitosis) despite adherence to a daily oral hygiene routine, emphasizing that the persistence of this condition for weeks is an indicator of bacterial and organic causes that go beyond superficial home care.

Medical guidelines explain that the primary cause of chronic bad breath is linked to bacteria producing volatile sulfur compounds due to the accumulation of plaque in interdental spaces and on the tongue’s surface, as well as severe gum inflammation and reduced saliva flow, or “dry mouth,” which deprives the oral cavity of its natural cleansing mechanism. Clinical assessments also indicate that the problem may sometimes stem from health issues outside the mouth and teeth, such as tonsil stones, acid reflux, or chronic sinus infections.

The British health authority stressed that relying exclusively on scented mouthwashes is merely a temporary solution that masks the odor without addressing its underlying bacterial causes.

The NHS has called for adherence to a preventive protocol comprising seven essential steps: gentle brushing with a fluoride toothpaste twice daily for two minutes; regular use of dental floss or interdental brushes; daily cleaning of the tongue surface with a dedicated tongue scraper; care of dentures and their removal at night; stimulating saliva flow with sugar-free gum; abstaining from smoking; and regular dental check-ups to remove tartar and treat cavities.