Oral Microbiology - Trump 2017 Flashcards
What are the two main bacteria that cause impetigo?
1-Streptococcus Pyogenes
2-Staphylococcus Aureus
What are the main causes of “Strep Throat” (tonsillitis/pharyngitis)?
1-Group A beta-hemolytic stretococci
2-Influenza,
3-Epstein-barr virus
*Majority are caused by a virus
What are two sequelae of strep throat?
1-Scarlet fever
2-Rheumatic fever (rheumatic heart disease, acute glomerulonephritis)
What condition is caused by disseminated Group A beta-hemolytic streptococcal infection and presents with a strawberry tongue?
Scarlet Fever
What organism causes diphtheria?
Cornebacterium diphtheriae
*grey or white necrotic tissue
What organism causes syphilis?
Treponema pallidum (spirochete)
*Syphilis is characterized by chancre that develops
Scattered foci of granulomatous inflammation, a type of necrosis, is called what?
Gumma
*intraoral lesions usually affect the palate or tongue
Purulent discharge and dysuria are common in gonorrhea and is caused by what organism?
Neisseria gonnorhoeae
What test is used to stain for tuberculosis causing mycobacterium tuberculosis?
Acid fast bacillus
What is the main host of leprosy causing mycobacterium leprae?
9 banded Armadillo in their ears.
*82% of leprosy is in Brazil, india, indonesia, myanmar and nigeria
Sulfur granules are typical of actinomycosis caused by actinomyces israelii. what three places can this bacteria colonize in healthy patients?
1-Tonsilar crypts
2-Plaque
3-Carious dentin
What organism causes Cat-Scratch disease?
Bartonella henselae
*Starts in skin and spreads to adjacent lymph nodes
Candidiasis primarily caused by candida albicans is found in what two forms (dimorphism)?
Yeast form (innocuous) Hyphal form (invasion of host tissue)
*by far the most common oral fungal infection in humans
Noninvasive in normal hosts, what condition results in a mass of fungal hyphae called a mycetoma?
Aspergillosis
*Can be extensive in immunocompromised patients
