oral microbes Flashcards
(19 cards)
what are the pros in the balance of disease?
immune system
vaccines
antimicrobial agents
what are the cons in the balance of disease?
immuno-suppression
virulence factors
resistance
what are the contributors to oral health?
integrity of oral mucosa lymphoid tissue saliva gingival crevicular fluid humoral and cellular immunity
what are the antimicrobial actions of saliva?
mechanical cleansing lysozyme peroxidase leucocytes secretory IgA
what does it mean when a microbe is ubiquitous?
multiple environments
what does it mean when a microbe is diverse?
variety of shapes, sizes and characteristics
what does it mean when a microbe is adaptable?
evolves quickly
what is the lifecycle of a parasite?
enters/attaches to host consolidation/multiplication causes harm release from host dissemination + transmission
what are virulence factors and examples
motility-flagella adhesion-pili colonisation-extrapolymeric material invasion-enzymes/toxins spread-immune evasion
how many microorganisms are there in saliva?
10^8 per millilitre
what organisms produce acid, which leads to dental caries?
streptococcus mutans
lactobacillus species
actinomyces species
what is hyperplastic gingivitis?
proliferative response to plaque
where can haematogenous spread occur?
cardiovascular
prosthetic joints
dissemination-toxic shock
what type of oral candidosis does pseudomembranous cause?
thrush
what type of oral candidosis does erythematous cause?
atrophic eg HIV
denture related
what type of oral candidosis does candida leukoplakia cause?
hyperplastic
what is the main symptom of pseudomembranous candidosis?
non-adherent white plaques
what are the signs of candida leukoplakia?
adherent
often speckled
usually smokers
premalignant
what causes angular cheilitis?
staphylococcus aureus
