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Corynebacterium diphtheriae [a] is a Gram-positive pathogenic bacterium that causes diphtheria. [2] It is also known as the Klebs–Löffler bacillus because it was discovered in 1884 by German bacteriologists Edwin Klebs (1834–1912) and Friedrich Löffler (1852–1915). [3] The bacteria are usually harmless unless they are infected by a ...
Causes. 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.
Diphtheria is an infection caused by the bacterium Corynebacterium diphtheriae. [2] Most infections are asymptomatic or have a mild clinical course, but in some outbreaks, the mortality rate approaches 10%. [1] Signs and symptoms may vary from mild to severe, [1] and usually start two to five days after exposure. [2]
Noma (also known as gangrenous stomatitis or cancrum oris) is a rapidly progressive and often fatal gangrenous infection of the mouth and face. Noma usually begins as an ulcer on gums and rapidly spreads into the jawbone, cheek, and soft tissues of the face. This is followed by death of the facial tissues and fatal sepsis.
Infectious disease. A staphylococcal infection or staph infection is an infection caused by members of the Staphylococcus genus of bacteria. These bacteria commonly inhabit the skin and nose where they are innocuous, but may enter the body through cuts or abrasions which may be nearly invisible. Once inside the body, the bacteria may spread to ...
Oral microbiology. Thrush, a common condition caused by overgrowth of the fungus Candida albicans. Cases are characterized by growth of matted, yellow-white patches of fungus in the mouth. Oral microbiology is the study of the microorganisms (microbiota) of the oral cavity and their interactions between oral microorganisms or with the host. [1]
Normal appearance of the tongue, showing a degree of visible white coating and normal irregular surface on the posterior dorsum. The most common location for mouth-related halitosis is the tongue. Tongue bacteria produce malodourous compounds and fatty acids, and account for 80 to 90% of all cases of mouth-related bad breath.
Simplistic representation of the life cycle of mouth ulcers. An ulcer ( / ˈʌlsər /; from Latin ulcus, "ulcer, sore") [2] is a break in the skin or mucous membrane with loss of surface tissue and the disintegration and necrosis of epithelial tissue. [3] A mucosal ulcer is an ulcer which specifically occurs on a mucous membrane.