Dthy 363 Chapter 13 Jeopardy Template

Microbial Communities	Oral Biofilms	stages of polymicrobial biofilm formation	Oral Biofilm Terms	Hypothesis on Role of Bacteria toward Periodontal Destruction
100 What color do gram positive bacteria appear microscopically? red	100 What is a term for residential bacteria that are part of the normal flora in the mouth? commensal bacteria	100 What is the stage where an extracelluar polymeric substance forms to protect the microbes from phagocytosis and antibiotic treatments? stage 3	100 What is the name for the series that developed within a biofilm to direct fluid to bring nutrients and oxygen to microbes and carry away waste products? fluid channels	100 What is the name of the historical hypothesis that stated the abundance of bacteria along the gingival margin led to gingival inflammation and tissue destruction? Nonspecific Plaque Hypothesis
200 What color do gram negative bacteria appear microscopically? purple	200 What is the term for an oral biofilm that contributes to the host's nutrition, maintenance of immune system and provides cover over the mucous membrane? symbiosis	200 What is the stage where an acquired pellicle forms on a newly cleaned tooth surface for planktonic microbes to attach? stage 1	200 What is the term when geneticaly distinct bacteria attach to one another? coaggregation	200 What is the name of the historical hypothesis that stated the presence of specific bacteria in teh biofilm directly causes the tissue destruction seen in periodontitis? Specific Plaque Hypothesis
300 What amount of time does it take the acquired pellicle to form on a newly cleaned tooth surface? within minutes	300 What is term for an oral biofilm with microbial imbalance allowing pathogenic bacteria to dominate and potentially cause periodontal destruction? dysbiosis	300 What is the stage where microbes coaggregate to genetically distinct bacteria and create a steadfast grip to the tooth surface? stage 2	300 What is the term for the protective substance secreted by bacteria to protect the biofilm from phagocytosis and antibiotic treatments? extracellular protective matrix or extracelluar polymeric substance/extracelluar slime layer	300 What is the name of the current hypothesis that states that changes in the subgingival environment to dictate the specific pathogenic biofilm that causes periodontal destruction? Ecological Plaque Hypothesis
400 What amount of time does it take for microbes to produce an initial extracellular protective matrix? 6 to 12 hours	400 Why is periodontal instrumentation by a dental professional necessary in the prevention of periodontal disease? toothbrush and floss can't reach the base of periodontal pockets to disrupt pathogenic biofilm.	400 What is the stage where microbes leave the community and colonize on new tooth surfaces? stage 5	400 What is term for the tail-like or leg-like extensions on bacteria that help them "swim" through fluid? flagella	400 What is the name of the current hypothesis which states a shift form beneficial to pathogenic microbes triggers the host inflammatory response; the host inflammatory response cuases the tissue destruction seen in periodontitis? Microbial Homeostatis- Host Response Hypothesis
500 What amount of time does it take for biofilm to evolve to a fully mature biofilm resistant to antibiotics? 2 to 4 days	500 What spirochete is known to cause necrotizing ulcerative gingivitis? Treponema denticola	500 What is the stage where microbes cluster together to form mushroom-shaped colonies that exchange and share products to provide a favorable living environment? stage 4	500 What is term for the hair like extension on bacteria that aid in adhesion of cells to each other and tooth surfaces? fimbriae	500 What is the name of the current hypothesis which states a certain species initiate a shift from beneficial to dysbiotic microbes that trigger the host inflammatory response causing tissue destruction seen in periodontitis? Keystone Pathogen Hypothesis

DTHY 363 Chapter 13

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