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19 Cards in this Set
- Front
- Back
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Dental plaque |
-not food debris (which can be removed by rinsing) -only removed by mechanical means (brushing) *organized community of microrganisms that form into biofilm |
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Substrate |
material metabolized that produce acids that leads to demineralization *sugar (sucrose) |
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cariogenic |
ability to cause caries *sugars, s. mutans |
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4 factors of dental caries etiology |
Host substrate Oral bacteria Time |
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Deciduous vs. permanent teeth which one is more susceptible to acid dimineralization? |
Deciduous |
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Host (tooth) sub factors include |
age *flouride root exposed? Saliva |
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Substrate (food) sub factors include |
oral clearance (food remain?) oral hygiene eating frequency food detergency (if food can clean teeth) consumption of carbohydrates cariogenicity of carbs (sucrose most potent) |
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Oral bacteria sub factors |
Microbial load (how much present) plaque composition (microbes differ) plaque acidoduricity ( microbe survival pH) oral hygiene (how much get rid of) fluoride present |
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oral streptoccoci and gram negative bacteria in newborn infants is acquired via? |
vertical transmission |
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transmission of Periodontal pathogens in adults will occur |
horizontal transmission |
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Ph and temperature in oral cavity |
6.75-7.25 maintained by pH temperature of 35-36 |
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Specific plaque hypothesis |
caused by infection of S. mutans or the mutans streptococci not by any other species |
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Nonspecific plaque hypothesis |
acidogenic, acid tolerant bacteria besides S. mutans contribute to caries process |
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Ecological plaque hypothesis |
Depends on sugar intake will affect oral environment |
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Stage 1 of development of dental plaque |
Pellicle (acellular layer) |
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Stage 2 of development of dental plaque |
Initial attachment, attachment of single bacterial cells within 4h |
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Stage 3 of development of dental plaque |
Growth of attached bacterial leading to formation of distinct microcolonies (4h-24 h) |
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Stage 4 of development of dental plaque |
Microbial succession and co-adhesion leading to increased species diversity with continued growth of microcolonies (1-7days) |
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Stage 5 of development of dental plaque |
Climax community/mature biofilm (1 week or older) |
