口臭,是指患者呼出和口腔里吐出的气息具有令人难闻的气味.它不仅给患者本人带来卑怯与烦恼,也会使周围的人产生不悦与厌恶。有口臭者大多自己并不觉察,有的虽自感口鼻气味难闻,也不知何故.凡事都“事”出有因,现将引起口臭的一些常见原因简述如下:一、生理因素人在睡眠时,涎腺分泌减少,口腔缺乏唾液的冲刷自洁作用,细菌容易繁殖,醒来后或清晨可能口吐臭气.有些老年人呼出臭气,与消化功能减退和机体代谢改变有关.有习惯性便秘、睡眠不足、日夜班生活颠倒的 Bad breath refers to the unpleasant smelling of the breath exhaled by the patient and the breath in the mouth, which not only brings cowardice and annoyance to the patient, but also causes displeasure and disgust to those around him. Some who have bad breath are not aware of their own, and some although self-muzzle smell unpleasant, but also somehow all things “things ” out of reason, will now cause some common causes of bad breath as follows: First, physiology Factors in the human sleep, the salivary gland secretion decreased oral lack of saliva scouring and self-cleaning role of bacteria easy to reproduce, woke up or early morning may vomit odor some elderly people exhaled odor, and digestive deterioration and metabolic changes in the body Related habitual constipation, lack of sleep, day and night life upside down