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26 Cards in this Set
- Front
- Back
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Prime etiologic factor in the development and progression of dental caries and periapical diseases |
Bacteria |
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First recorded observation of bacteria in root canals |
Antony van Leeuwenhoek first |
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First described significance of bacteria in endodontic infection |
Kakehashi |
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How do the microorganism reach the root canal? |
Caries, fractures, exposed dentinal tubules. Coronal leakage Periodontium Anachoresis |
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What is Anachoresis ? |
Attraction of the microorganism to the focus of the inflammation. |
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Front (Term) What is the pulp response to caries reaching the pulp? |
Back (Definition) PMNs attracted -abcess Inflammation to necrosis- slow or fast |
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What is the pulp response to caries - dentin |
Lymphocytes, plasma cells, and macrophages( in chronic cell infiltrate ) Formation of irregular -reparative or irritation - Dentin -----decrease permeability |
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Pulp response to caries reaching pulp |
PMNs attracted - abscess formation. Inflammation to necrosis - slow or fast. |
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Which bacteria is predominant on root canal ( infected? |
Back (Definition) Obligate anaerobes |
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Main bacterial on root canal |
Gram - Prevotella Porphyromonas Tannerella Dialister Fusobacterium Spirochete - treponema Gram+ anaerobic rods and cocci Streptococcus , campylobacter Candida Archaea Virus which bacterias |
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Which bacterias is responsible for secondary endodontic infection ? |
Dominated by facultative anaerobic gram + Enterococcus And also actinomyces, propionibacteria, yeast and streptococci E fecalis |
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With bacteria is associated-with Severe flare up pain and swelling?
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F. Nucleatum Prevotella Porphyromonas |
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what do we use as a irrigation on root canal preparation? |
Sodium hypochlorite Chlorhexidine Ultrasonics and sonics
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What is the goal of obturation? |
Decrease chance of re contamination and to " entomb" any remaining bacteria |
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When we prescribe antibiotics ? |
Systemic involvement. Progressive diffuse swelling and cellulitis. Medically compromised patients.
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Does antibiotic reduces pain on irreversible pulpitis? |
No |
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What criteria the bacterias has to achieve to be called community( biofilm) |
1-Autopsies - self organized 2-Resist environment perturbation.(homeostasis) 3-more effective in association than in isolation( synergy) 4-respond to environmental changes as a unit rather than single individual (communality) |
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How the interactions between microorganism and biofilm occur ? |
Gene transfer Extra chromosomal DNA Quorum sensing Autoaggregation and coaggregation Antagonist interactions |
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Which mechanism makes microbes in biofilm are more resistance to antimicrobials ? |
1 -extra cellular polymeric matrix- acts as diffusion 2-grown rate and nutrient availability 3- adoption of resistance phenotype |
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Which bacteria is associated with purple r drainage? |
Provotella and Porphyromonas |
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Front (Term) Which bacteria is associated with percussion pain? |
Peptostreptococcus Eubacteria Porphyromonas |
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Which bacteria is associated with symptom? |
Treponema denticola Tannerella forsythesis Dialister pneumosintes |
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Categorized the bacteria biofilm |
Intracranial biofilms Extraradicular biofilms Periapical biofilm Biomaterial centered infection |
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True or false Phagocytes are unable to engulf bacteria in matrix enclosed biofilm structures |
True |
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"Sulfur granules "on microscope |
Actionomyces biofilm |
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Does antibiotic reduces pain in acute pulpitis? |
No. We should use NSAIDs |
