The difference between tooth gap odor and bad breath

Although bad breath from between the teeth and general halitosis are similar in some aspects, they differ significantly across multiple dimensions. Odor originating from interdental spaces is primarily localized to the gaps between two adjacent teeth and is usually caused by local factors such as food impaction, dental caries, or periodontitis. These localized conditions promote the growth of anaerobic bacteria within the tooth gaps, leading to foul odor. In contrast, halitosis may involve a generalized malodor throughout the oral cavity and has more complex etiologies, including poor oral hygiene, gingivitis, and periodontitis, as well as systemic conditions such as Helicobacter pylori infection and gastroesophageal reflux disease (GERD). Specifically, interdental odor typically manifests only as a localized unpleasant smell around certain teeth, whereas patients with halitosis may experience not only oral malodor but also symptoms related to underlying diseases, such as nausea, acid reflux, and abdominal pain. When managing these two conditions, it is essential to implement targeted treatment strategies according to their distinct causes and clinical presentations.