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General
Bacteria: 0.1-10µm
Viruses: 0.03-0.3µm
Protozoa Fungi: 4-40µm…
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Oral Flora
- Pneumonia
- Bacterial Endocarditis
- Atheromatous
- Diabetes
Variation
Age
1y/o (Mucosal)
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- Streptococci
Supra-gingival
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- Veillonella spp
Sub-Gingival
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Teeth errupt (Mucosal, Tooth, Crevice)
- Anaerobes
Porphyromonas
Prevotellas
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Locality
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Sub-Gingival
Anaerobes
- Actinomyces
- Gram negative
Obligate Anaerobes
- Tannerella forsythia
- Porphyromonas gingivalis
- Proteolytic
- Raise pH
- Promote bacterial growth
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Ecological plaque hypothesis
(Marsh, 1991, 1994)
Periodontal disease results from
upset in microbial balance
Experimental Gingivitis in Man
(Loe et al 1965)
Initial: Gram +ve cocci & rods (>80%)
Gingivitis: Gram +ve cocci & rods (45-60%)
Fusobacteria, Gram -ve
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