Oral Microbiology

Question 1

impetigo

Answer 1

honey crust
strep pyogenes
staph aureus

Question 2

“strep throat”

Answer 2

group A beta hemolytic strptococci, influenze, epstein barr
majority is viral
Signs and sympotms: sorat rhoat, dysphagia, tonsillar hyperplasia, fevver (bacteria), heaadache
sequalea: scarlet fever, rheumatic fever (rf goes to rheumatic heart diesease, acute glomerulonephritis)

Question 3

scarlet fever

Answer 3

disseminated group A beta hemolytic streptococcal
first 2 days is white strawberry tongue
4-5 days you get red strawberry tongue

Question 4

diptheria

Answer 4

throat closing up

cornebacterium diphteriae

Question 5

syphilis

Answer 5

treponema pallidum
primary syphillis- chancre at site of innoculation (3-90 days) painless ulceration
tertiary- Gumma- scattered foci of granulomatous inflammation- intraoral on palate or tongue

Question 6

gonorrhea

Answer 6

neisseria gonorrhoeae
sex
purulent discharge, dysuria (painful peeing)

Question 7

TB

Answer 7

mycobacterium tuberculosis

acid fast bacillus

Question 8

leprosy

Answer 8

chronic- mycobacterium leprae
low infectivity- brazil, india idonesia. myanmar, nigeria
luisiana and texas
armadillo is host

Question 9

actinomycosis

Answer 9

bactera- actonomyces israelii
tonsilar crypts, plaque. carious dentin
suppurative reaction may discahrge yellow material, colonies of bacteria “sulfer granules”

Question 10

cat scratch disease

Answer 10

bartonella henselae
lymph nodes
most common cause of chronic regional lumphadenopathy in children
from cats

Question 11

candidiasis

Answer 11

canddida albicans
dimorphic- yeast form (innocuous) and hyphal (invasion of host tissue)
most common oral fungus

Question 12

aspergillosis

Answer 12

1)non invasive affects normal host
allergic reaction- mass of fungal hyphae (aspergilloma)
2invasive- localized, extenive involvement in immunocomprimised pt

a. fumigatus (90%) and a. flavus

Question 13

human herpes virus

Answer 13

dna virus
HSV1- saliva or active perioral lesions
hsv2- sexual contact
younger= gingivostomatitis - primary
18+ typicalls pharyngotonsillitis
herpetic whitlow= thumb or fingers
herpes gladiatorum or scrumpoz= wrestlers or rugby players
herpes barbae= bearded region, spread by shaving

Question 14

VZV

Answer 14

chickenpox-shignles

spread through airdroplets or contact with active lesion

Question 15

HIV/AIDS

Answer 15

1981 is first case
sexual contact, blood, or mother to fetus
targets CD4+ helper t lymphocyte

Question 16

oral manifestation strongly associated with HIV

Answer 16

candidiasis, hairy leukoplakia, karposis sarcoma, non-hodgkins lymphoma, periodontal disease