Wikipedia
Halitosis
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Halitosis, or most commonly bad breath are terms used to describe noticeably unpleasant odors exhaled in breathing – whether the smell is from an oral source due to bacteria or otherwise.
Halitosis has a significant impact – personally and socially – on those who suffer from it or believe they do (halitophobia), and is estimated to be the third most frequent reason for seeking dental aid, following tooth decay and periodontal disease.loesche>Loesche WJ, Kazor C. Microbiology and treatment of halitosis. Periodontology 2000. 2002;28:256-79. PMID 12013345.
General
In most cases (85–90%), bad breath originates in the mouth itself."rosenberg0">Rosenberg M. The science of bad breath. Sci Am. 2002 Apr;286(4):72-9. PMID 11905111. The intensity of bad breath differs during the day, due to eating certain foods (such as garlic, onions, meat, fish, and cheese), obesity, smoking, and alcohol consumption.Rosenberg M, Knaan T, Cohen D. Association among bad breath, body mass index, and alcohol intake. J Dent Res. 2007 Oct;86(10):997-1000. PMID 17890678.Knaan T, Cohen D, Rosenberg M. Predicting bad breath in the non-complaining population. Oral Dis. 2005;11 Suppl 1:105-6. Because the mouth is exposed to less oxygen and is inactive during the night, the odor is usually worse upon awakening ("morning breath"). Bad breath may be transient, often disappearing following eating, brushing ones teeth, flossing, or rinsing with specialized mouthwash.
Bad breath may also be persistent (chronic bad breath), which is a more serious condition, affecting some 25% of the population in varying degrees.Bosy A, Oral malodor: philosophical and practical aspects. J Can Dent Assoc. 1997 Mar;63(3):196-201 PMID 9086681. It can negatively affect the individuals personal, social, and business re read more at » http://en.wikipedia.org/wiki/Halitosis