where does bacteria in the mouth come from
saliva
title: Mouth infection text: Mouth infection Mouth infections, also known as oral infections, are a group of infections that occur around the oral cavity. They include dental infection, dental abscess, and Ludwig's angina. Mouth infections typically originate from dental caries at the root of molars and premolars that spread to adjacent structures. In otherwise healthy patients, removing the offending tooth to allow drainage will usually resolve the infection. In cases that spread to adjacent structures or in immunocompromised patients (cancer, diabetes, transplant immunosuppression), surgical drainage and systemic antibiotics may be required in addition to tooth extraction. Since bacteria that normally reside in the oral title: Oral microbiology text: Oral microbiology Oral microbiology is the study of the microorganisms (microbiota) of the oral cavity and their interactions between oral microorganisms or with the host. The environment present in the human mouth allows the growth of characteristic microorganisms found there. It provides a source of water and nutrients, as well as a moderate temperature. Resident microbes of the mouth adhere to the teeth and gums to resist mechanical flushing from the mouth to stomach where acid-sensitive microbes are destroyed by hydrochloric acid. Anaerobic bacteria in the oral cavity include: "Actinomyces", "Arachnia", "Bacteroides", "Bifidobacterium", "Eubacterium", "Fusobacterium", "Lactobacillus", "Leptotrichia", "Peptococcus", "Peptostreptococcus", "Propionibacterium", title: Mouth infection text: the infection because they can compromise the airway and lead to fatal complications like mediastinitis. Mouth infections are most commonly caused by an overgrowth of bacteria that normally populate the oral cavity. In a healthy adult, billions of bacteria, viruses, and fungi reside within the oral cavity and represent more than 500 different species. They are collectively known as the oral microbiome. When healthy, the oral microbiome is in dynamic equilibrium such that no one bacteria or group of organisms dominates. However, certain situations, like a decaying tooth root or a penetrating puncture wound from a fish bone, can generate title: Human microbiota text: A variety of microorganisms inhabit the uterus of healthy, asymptomatic women of reproductive age. The microbiome of the uterus differs significantly from that of the vagina and gastrointestinal tract. The environment present in the human mouth allows the growth of characteristic microorganisms found there. It provides a source of water and nutrients, as well as a moderate temperature. Resident microbes of the mouth adhere to the teeth and gums to resist mechanical flushing from the mouth to stomach where acid-sensitive microbes are destroyed by hydrochloric acid. Anaerobic bacteria in the oral cavity include: "Actinomyces", "Arachnia", "Bacteroides", "Bifidobacterium", "Eubacterium", "Fusobacterium", "Lactobacillus", title: Human microbiota text: found throughout the mouth are of multiple subtypes, preferring to inhabit distinctly different locations in the mouth. Even the enterotypes in the human gut, previously thought to be well understood, are from a broad spectrum of communities with blurred taxon boundaries. It is estimated that 500 to 1,000 species of bacteria live in the human gut but belong to just a few phyla: Firmicutes and Bacteroidetes dominate but there are also Proteobacteria, Verrumicrobia, Actinobacteria, Fusobacteria and Cyanobacteria. A number of types of bacteria, such as "Actinomyces viscosus" and "A. naeslundii", live in the mouth, where they are part of a